TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

Supplied commercially by Ataman Kimya with ultra-low residual acidity (acid value <= 0.05 to 0.10 mg KOH/g), strictly controlled moisture (<= 0.10% to 0.20% w/w), low free 2-butoxyethanol monomer, and non-hazardous transport classification across ADR, RID, IMDG, and IATA, TBEP Tris(2-butoxyethyl) Phosphate integrates effortlessly into both water-based emulsion systems and 100%-solids rubber or resin compounding lines. Selecting the appropriate high-purity grade and co-solvent or co-plasticizer ratio for TBEP Tris(2-butoxyethyl) Phosphate guarantees mirror-like gloss in institutional floor finishes, zero-crater film coalescence in waterborne coatings and inks, and non-blooming low-temperature elasticity in engineered elastomer goods.
CAS Number: 78-51-3 (Ethanol, 2-butoxy-, 1,1',1''-phosphate; Tris(2-butoxyethyl) phosphate; Tributoxyethyl phosphate; Phosphoric acid, tris(2-butoxyethyl) ester)

EC Number: 201-122-9 (EINECS 201-122-9; EU REACH Registered substance: tris(2-butoxyethyl) phosphate)
Molecular Formula: C18H39O7P (Condensed Structural Formula: (C4H9OCH2CH2O)3PO or [CH3(CH2)3OCH2CH2O]3P=O; Elemental Composition: 54.25% C, 9.86% H, 28.11% O, 7.78% P by weight)
Molecular Weight: 398.47 g/mol (Exact Monoisotopic Mass: 398.2433 g/mol)
INCI Name: TRIS(BUTOXYETHYL) PHOSPHATE (CosIng Reference No. 38685; utilized primarily in industrial, institutional, coating, adhesive, textile, and elastomer formulations; restricted in consumer cosmetic products in certain jurisdictions—verify regional regulatory status prior to personal-care use)
E Number: Not assigned (Industrial leveling plasticizer, coalescent, flame-retardant ester, and antifoam processing aid; not a food additive, though regulated in specific indirect food-contact adhesives, paper coatings, and rubber articles under 21 CFR 175.105, 21 CFR 176.170, and 21 CFR 177.2600 subject to migration limits)
Melting Point: -70.0 °C (-94.0 °F; Pour Point / Freezing Point <= -70.0 °C per ASTM D97 / ISO 3016, remaining a free-flowing, non-crystallizing liquid down to arctic sub-zero temperatures)
Boiling Point: 215.0 to 228.0 °C (419.0 to 442.4 °F) at reduced pressure of 4.0 mmHg (5.33 hPa / 0.53 kPa); decomposes thermally above ~250 to 260 °C at standard atmospheric pressure (101.3 kPa / 760 mmHg) before reaching an atmospheric boiling point; Cleveland Open-Cup Flash Point: 224.0 °C (435.2 °F, ASTM D92); Closed-Cup Flash Point: 159.0 to 210.0 °C (ISO 1523 / Pensky-Martens, depending on trace volatile content); Autoignition Temperature: 322.0 °C (611.6 °F at 1013 hPa)
Viscosity: 11.0 to 15.0 mPa·s (cP) dynamic viscosity at 20 °C (typically 12.0 to 12.5 mPa·s at 20 °C and ~9.5 to 11.0 mPa·s at 25 °C per Brookfield LV or ASTM D445 capillary viscometry; kinematic viscosity ~11.0 to 14.7 mm2/s [cSt] at 20 °C)
Density: 1.015 to 1.025 g/cm3 at 20 °C (typically 1.020 g/cm3 at 20/20 °C and 1.010 to 1.020 g/cm3 at 25 °C per ASTM D4052 / ISO 12185; Bulk Weight ~8.51 lb/gal at 20 °C; Refractive Index n20/D: 1.4340 to 1.4380, n25/D: 1.4320 to 1.4370)

Most Frequently Encountered Synonyms:
TBEP Tris(2-butoxyethyl) Phosphate
TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE
Tris(2-butoxyethyl) phosphate
Tributoxyethyl phosphate
Tri(2-butoxyethyl) phosphate
Tris(butoxyethyl) phosphate
Tri(butoxyethyl) phosphate
Tributoxy ethyl phosphate
Phosphoric acid, tris(2-butoxyethyl) ester
KP-140 (Classic industrial trade designation for Tris(2-butoxyethyl) phosphate)
Amgard TBEP
Phosflex T-BEP
Reomol TBEP
Kronitex KP-140
Disflamoll TBEP
Hostaphat B 310
Tris(2-bütoksietil) fosfat (Turkish)
Tribütoksietil fosfat (TBEP)

WHAT IS TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE?

TBEP Tris(2-butoxyethyl) Phosphate is a synthetic, halogen-free organophosphorus triester formed by the complete esterification of one mole of phosphoryl chloride (phosphorus oxychloride, POCl3) with three moles of 2-butoxyethanol (ethylene glycol monobutyl ether, C4H9OCH2CH2OH). In industrial polymer science and surface coating chemistry, TBEP Tris(2-butoxyethyl) Phosphate occupies a unique functional niche at the intersection of three distinct additive classes: (1) high-efficiency permanent plasticizers and low-temperature flexifiers for polar polymers, (2) amphiphilic surface-tension reducers, coalescents, and flow-and-leveling agents for aqueous polymer dispersions, and (3) non-silicone air-release / defoaming and phosphorus flame-retardant auxiliaries.
Unlike conventional hydrophobic plasticizers (such as dioctyl phthalate DOP, diisononyl phthalate DINP, or dioctyl adipate DOA) that lack polar ether oxygen bridges and often cause cratering or poor wetting in waterborne acrylic emulsions, TBEP Tris(2-butoxyethyl) Phosphate contains three internal ethylene-glycol ether linkages (-O-CH2-CH2-O-) terminated by flexible n-butyl tails (-CH2CH2CH2CH3). These internal ether oxygens form weak hydrogen bonds with water and polar acrylic or nitrile functional groups while the terminal n-butyl chains orient toward the air interface, reducing dynamic surface tension and allowing latex particles to wet low-energy substrates (such as worn vinyl composition tile VCT, linoleum, terrazzo, PVC, and coated paperboard) and fuse into a defect-free, glass-smooth film.

At the same time, because TBEP Tris(2-butoxyethyl) Phosphate has a high molecular weight (398.47 g/mol) and an extremely low vapor pressure (< 0.01 Pa at 20 °C, boiling range 215 to 228 °C at 4 mmHg), it does not evaporate completely out of the dried film like volatile glycol ether coalescents (such as DPM, DPnB, or Texanol). Instead, TBEP Tris(2-butoxyethyl) Phosphate remains inside the coalesced polymer film as a permanent internal plasticizer, imparting resilience against powdering under high-speed burnishing machines, eliminating recoat whitening, and preserving low-temperature flexibility down to -50 to -60 °C in synthetic rubber and vinyl goods.

HISTORICAL DEVELOPMENT AND INDUSTRIAL EVOLUTION OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

TBEP Tris(2-butoxyethyl) Phosphate was first commercialized in the late 1940s and 1950s (famously introduced under the trade designation KP-140 by FMC Corporation / Ohio-Apex) alongside the post-war boom in synthetic nitrile/neoprene rubbers and the transition of institutional floor maintenance from buffable carnauba/paraffin solvent waxes to water-based styrene-acrylic and metal-crosslinked acrylic emulsion floor polishes. Early formulators of self-polishing acrylic polymer floor finishes discovered that while hard styrene-acrylic copolymers (Tg +40 to +80 °C) provided outstanding traffic durability and gloss potential, their high surface tension and rapid water evaporation caused severe applicator mop ridges, "fisheyes", pinholing, and brittle film cracking ("powdering") during winter low-humidity conditions.

When chemists incorporated 0.8% to 2.0% w/w of TBEP Tris(2-butoxyethyl) Phosphate into these aqueous acrylic emulsions, it solved both problems simultaneously: it acted as an active wetting and leveling surfactant during the wet drying stage and as a permanent plasticizer in the cured zinc-crosslinked film. Over the subsequent seven decades, TBEP Tris(2-butoxyethyl) Phosphate expanded rapidly into cold-resistant NBR/CR military and automotive rubber seals, blood-collection vacuum tube rubber stoppers (as a non-phthalate, low-extractable plasticizer alternative), low-viscosity PVC plastisols, waterborne flexographic/gravure printing inks, and halogen-free flame-retardant polyurethane and cellulosic coatings.

CHEMICAL STRUCTURE, AMPHIPHILIC LEVELING ARCHITECTURE AND PLASTICIZATION MECHANISM

The exceptional multi-functionality of TBEP Tris(2-butoxyethyl) Phosphate is governed by four synergistic structural features within its C18H39O7P molecule:

Central Tetrahedral Phosphoryl Core (O=P(OR)3): The strongly polar P=O phosphoryl bond (dipole moment ~3.0 Debye) acts as a powerful hydrogen-bond acceptor and dipole-dipole solvating center. This enables TBEP Tris(2-butoxyethyl) Phosphate to intercalate strongly between polar polymer chains—including polyvinyl chloride (PVC), acrylonitrile-butadiene rubber (NBR), polychloroprene (CR), polyurethane (PU), nitrocellulose, cellulose acetate butyrate (CAB), and carboxylated acrylic copolymers—breaking polymer-polymer dipole interactions and lowering the glass transition temperature (Tg) with high plasticizing efficiency.

Three Ethoxy-Ether Spacer Linkages (-O-CH2-CH2-O-): Each of the three ester arms of TBEP Tris(2-butoxyethyl) Phosphate incorporates an internal ether oxygen atom separated from the phosphate ester oxygen by a two-carbon ethylene bridge. These three internal ether oxygens impart dramatic segmental rotational freedom (low rotational energy barrier around C-O-C bonds) and partial hydrophilicity (water solubility ~0.66 to 1.1 g/L at 25 °C; octanol-water partition coefficient log Kow = 3.75). Consequently, TBEP Tris(2-butoxyethyl) Phosphate bridges the polarity gap between the aqueous phase and the hydrophobic polymer core during latex film coalescence.

Terminal Linear n-Butyl Tails (-CH2-CH2-CH2-CH3): The three four-carbon aliphatic butyl chains shield the polar phosphate core from excessive water absorption, prevent crystallization down to -70 °C, lower the melt/solution viscosity of the pure ester to a remarkably fluid 12 mPa·s at 20 °C, and provide surface-active orientation at air-liquid interfaces (reducing the surface tension of aqueous latex systems to ~28–32 mN/m and destabilizing entrained micro-foam bubbles).

Non-Halogenated Phosphorus Content (7.78% w/w P): Unlike chlorinated paraffins or brominated flame retardants, or chlorinated phosphate esters like TCPP (tris(2-chloro-1-methylethyl) phosphate, CAS 13674-84-5) and TDCPP, TBEP Tris(2-butoxyethyl) Phosphate contains zero chlorine or bromine atoms (0.0% halogen). Under thermal exposure or fire conditions, its 7.78% elemental phosphorus promotes condensed-phase char formation via polyphosphoric acid dehydration while avoiding corrosive hydrogen chloride (HCl) or hydrogen bromide (HBr) smoke generation.

INDUSTRIAL PRODUCTION AND MANUFACTURING PROCESSES

High-purity commercial TBEP Tris(2-butoxyethyl) Phosphate supplied by Ataman Kimya is manufactured via a tightly controlled multi-stage catalytic esterification and vacuum purification process:
- Stage 1 (Controlled Esterification of Phosphorus Oxychloride with 2-Butoxyethanol): High-purity anhydrous 2-butoxyethanol (butyl glycol, CAS 111-76-2, >= 99.5% purity, moisture < 0.05%) is charged in a slight stoichiometric excess (typically 3.15 to 3.30 moles per mole of POCl3) into a glass-lined or Hastelloy jacketed reactor equipped with cooling coils and a vacuum condenser. Liquid phosphorus oxychloride (POCl3, CAS 10025-87-3) is metered subsurface at a controlled low temperature (initially 15 to 35 °C, then stepped up to 50 to 80 °C) in the presence of a Lewis acid catalyst (such as titanium tetrachloride TiCl4, magnesium chloride MgCl2, or aluminum chloride AlCl3) while applying reduced pressure (50 to 150 mbar) and dry nitrogen sparging to continuously strip out evolved hydrogen chloride (HCl) gas:
  POCl3 + 3 C4H9OCH2CH2OH  --->  (C4H9OCH2CH2O)3P=O (TBEP) + 3 HCl (gas)
  Rapid vacuum removal of by-product HCl is critical; if HCl remains in the hot reaction mass, it cleaves the ether linkage of 2-butoxyethanol to generate undesirable 1-chlorobutane, 2-butoxyethyl chloride, and acidic mono-/di-(2-butoxyethyl) phosphoric acid esters.
- Stage 2 (Alkaline Neutralization and Chelation Washing): Once esterification conversion exceeds 99.5%, the crude ester is cooled and washed with dilute aqueous sodium carbonate (Na2CO3) or sodium hydroxide (NaOH) solution to neutralize residual HCl and convert any traces of mono- and di-alkyl acid phosphates into water-soluble sodium salts, followed by deionized water washing and phase separation.
- Stage 3 (Thin-Film Vacuum Stripping, Decolorization, and Polishing Filtration): The washed organic phase undergoes high-vacuum thin-film or wiped-film distillation stripping (at 130 to 160 °C under 1 to 5 mbar vacuum) with steam/nitrogen sparging to remove unreacted free 2-butoxyethanol and low-boiling impurities down to < 0.10% w/w. Treatment with activated carbon or bleaching earth and final polishing filtration through 1-micron cartridges yields crystal-clear TBEP Tris(2-butoxyethyl) Phosphate with assay >= 99.0%, acid value <= 0.05–0.10 mg KOH/g, water <= 0.10%, and color <= 30–50 APHA.

PHYSICAL AND CHEMICAL PROPERTIES OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

Typical commercial specification parameters and physical constants for Ataman Kimya's Technical / Coating / Elastomer Grade TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3) include:
- Chemical Name (IUPAC): Tris(2-butoxyethyl) phosphate
- CAS Registry Number: 78-51-3
- EC / EINECS Number: 201-122-9
- Appearance at 20 °C: Clear, colorless to very pale yellow, transparent mobile oily liquid free of suspended matter
- Odor: Very mild, characteristic faintly sweet butyl-ether odor (virtually odorless in finished floor polishes and coatings at 1% to 2% use levels)
- Purity / Ester Assay (GC area %): >= 99.0% w/w (typical 99.2% to 99.6% w/w)
- Phosphorus Content (Theoretical / Spec): 7.78% w/w theoretical (Specification: 7.8 +/- 0.5% w/w)
- Halogen Content (Cl / Br): 0.0% (100% Halogen-Free Organophosphate Ester)
- Color (APHA / Pt-Co / Hazen, ASTM D1209): <= 50 APHA (Premium Floor-Polish Grade typically <= 25 to 35 APHA)
- Acid Value / Acidity (ASTM D1045 / ISO 2114): <= 0.10 mg KOH/g (typical 0.02 to 0.06 mg KOH/g)
- Water Content (Karl Fischer, ASTM E203 / ISO 760): <= 0.15% w/w (max 0.20% w/w; typical 0.04% to 0.08% w/w)
- Specific Gravity / Relative Density (20/20 °C, ASTM D4052): 1.015 to 1.025 g/cm3 (at 25 °C: 1.010 to 1.020 g/cm3; literature 1.006 to 1.020 g/mL at 25 °C)
- Dynamic Viscosity at 20 °C (Brookfield / ASTM D445): 11.0 to 15.0 mPa·s (cP; typical 12.0 mPa·s at 20 °C)
- Refractive Index (n20/D, ASTM D1218): 1.4340 to 1.4380 (at 25 °C: 1.4320 to 1.4370)
- Pour Point / Freezing Point (ASTM D97): <= -70.0 °C (-94.0 °F)
- Boiling Range at 4.0 mmHg (5.33 hPa): 215.0 to 228.0 °C
- Flash Point (Cleveland Open Cup, ASTM D92): >= 210.0 °C (typical 224.0 °C / 435.2 °F; Closed-Cup ISO 1523: ~159 °C)
- Autoignition Temperature: 322.0 °C at 1,013 hPa
- Vapor Pressure: < 0.0001 hPa (< 0.01 Pa) at 25 °C; 0.04 hPa at 150 °C; Vapor Density: 13.75 (Air = 1.0)
- Surface Tension (Pure Liquid at 20 °C): ~30.0 to 32.5 mN/m (dynes/cm)
- Hildebrand Solubility Parameter (delta): ~18.8 MPa^1/2 (9.2 cal^1/2 cm^-3/2, closely matched to NBR, CR, PVC, nitrocellulose, and acrylic copolymers)
- Solubility in Water at 25 °C (OECD 105): ~0.66 to 1.10 g/L (sparingly soluble in pure water; readily emulsified or solubilized by anionic/nonionic surfactants and glycol ethers in aqueous latex systems)
- Solubility in Organic Solvents: Completely miscible with alcohols, glycol ethers (DPM, DEGEE/Carbitol, Butyl Glycol), ketones, esters, aromatic hydrocarbons, chlorinated solvents, and polar plasticizers; limited solubility in glycerol, ethylene glycol, and high-paraffinic white mineral oils
- Octanol-Water Partition Coefficient (log Pow / log Kow): 3.75 (OECD 107 / 117)

WHY EACH IMPORTANT PROPERTY OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE MATTERS IN PRACTICE

Floor-polish chemists, architectural coating formulators, and synthetic rubber compounders rely on specific quantitative parameters of TBEP Tris(2-butoxyethyl) Phosphate because each property directly governs end-use performance:
- Ultra-Low Pour Point (-70.0 °C) and Low Viscosity (12 mPa·s at 20 °C): Because TBEP Tris(2-butoxyethyl) Phosphate remains a mobile liquid down to -70 °C, it imparts extreme sub-zero flexibility (-50 to -58 °C brittle point) to NBR, HNBR, CR, and PVC compounds and can be pumped from outdoor or unheated drums in winter without crystallization or steam tracing.
- Partial Water Solubility (0.66 to 1.1 g/L) and Amphiphilic Surface Tension (~30 mN/m): If a plasticizer is 100% water-insoluble (like DOP or TOF), it forms oil droplets and craters in waterborne floor polishes; if it is 100% water-miscible (like triethyl phosphate TEP), it stays in the water phase rather than partitioning into the acrylic polymer particles. The 0.66–1.1 g/L water solubility and log Kow of 3.75 of TBEP Tris(2-butoxyethyl) Phosphate create the ideal balance between air-water interfacial leveling and polymer-core plasticization.
- High Boiling Point (215–228 °C at 4 mmHg) and Negligible Vapor Pressure (< 0.01 Pa at 25 °C): Ensures that TBEP Tris(2-butoxyethyl) Phosphate stays permanently inside dried floor polish films and cured rubber seals rather than evaporating during service or high-speed burnishing.
- Ultra-Low Acid Value (<= 0.05 to 0.10 mg KOH/g): Zinc-crosslinked acrylic floor polishes rely on an ammoniacal pH of 8.2 to 9.0 to keep zinc-ammine complex ions in solution prior to drying. High acidity in an off-spec phosphate ester neutralizes ammonia and triggers premature zinc crosslinking (gelling the polish in the container). Ataman Kimya's <= 0.10 mg KOH/g specification guarantees long-term package stability.

HOW DOES TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE WORK AT THE MOLECULAR AND PROCESS LEVEL?

Surface-Active Leveling and Coalescence in Floor Polishes and Waterborne Coatings:
When an aqueous acrylic, styrene-acrylic, or polyurethane floor finish is applied to a substrate with a mop or applicator pad, rapid water evaporation creates surface-tension gradients (Marangoni instabilities) that freeze applicator ridges, brush marks, and micro-foam craters into the drying latex film. Because TBEP Tris(2-butoxyethyl) Phosphate possesses an amphiphilic molecular structure (polar P=O and ethoxy oxygens paired with three hydrophobic n-butyl tails) and limited water solubility (~0.7 g/L), a fraction of TBEP Tris(2-butoxyethyl) Phosphate partitions to the air-water and substrate-water interfaces, lowering dynamic surface tension to ~30 mN/m and equalizing Marangoni gradients so the wet film flows out into a mirror-flat layer before polymer particle immobilization. Simultaneously, the bulk of TBEP Tris(2-butoxyethyl) Phosphate partitions into the hydrophobic core and carboxylated shell of the acrylic latex particles, softening the polymer spheres (lowering MFFT by 10 to 25 °C) so capillary forces fuse them into a continuous, high-gloss, pinhole-free film. Unlike volatile glycol ether coalescents (such as Carbitol or DPM) that evaporate within hours, TBEP Tris(2-butoxyethyl) Phosphate remains permanently inside the film (vapor pressure < 0.01 Pa), preventing low-humidity film embrittlement and "powdering" under 1,500–2,500 rpm high-speed floor burnishers.

Low-Temperature Plasticization in Polar Synthetic Rubbers (NBR, CR, Chlorinated Rubber) and PVC:
In acrylonitrile-butadiene rubber (NBR), hydrogenated NBR (HNBR), polychloroprene (CR), and flexible PVC, strong dipole-dipole attraction between C=N (nitrile) or C-Cl (chloride) groups causes the elastomer to stiffen into a brittle glass at sub-zero temperatures. The tetrahedral phosphoryl group and flexible 2-butoxyethyl chains of TBEP Tris(2-butoxyethyl) Phosphate solvate these polar nitrile and chloro groups while introducing high free volume (due to TBEP's own -70 °C pour point). Adding 10 to 25 phr of TBEP Tris(2-butoxyethyl) Phosphate shifts the glass transition temperature (Tg) and brittle point (ASTM D746 / ASTM D2137) of NBR and CR vulcanizates down to -50 to -60 °C while maintaining low oil/fuel swell and zero surface exudation ("blooming").

Non-Silicone Defoaming, De-Airing, and Plastisol Viscosity Depression:
Because TBEP Tris(2-butoxyethyl) Phosphate has a low surface tension (~30 mN/m) and a low viscosity (12 mPa·s at 20 °C), micro-droplets of TBEP Tris(2-butoxyethyl) Phosphate enter the lamellae of entrained air bubbles in aqueous coatings, paper coatings, textile dyebaths, and PVC plastisols, causing film thinning and rapid bubble rupture without creating the hydrophobic "fisheyes", craters, or inter-coat delamination notorious with polydimethylsiloxane (PDMS) silicone defoamers. In PVC plastisols, TBEP Tris(2-butoxyethyl) Phosphate wets pigment and resin surfaces rapidly, lowering initial and aged Brookfield paste viscosity.

Halogen-Free Phosphorus Flame Retardancy:
With 7.78% w/w elemental phosphorus, TBEP Tris(2-butoxyethyl) Phosphate decomposes endothermically during combustion to generate phosphoric and polyphosphoric acids that esterify and dehydrate oxygen-containing polymers (cellulosics, polyurethanes, acrylics, and paper/textiles) into an insulating carbonaceous char layer, while phosphorus radicals (PO·) in the gas phase quench H· and OH· flame-propagating radicals.

WHAT PROBLEMS CAN TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE HELP SOLVE?

Eliminating Mop Ridges, Brush Marks, "Fisheyes", and Recoat Ghosting in Floor Polishes: By migrating to the wet air-water interface and lowering surface tension to ~30 mN/m while softening latex particles, TBEP Tris(2-butoxyethyl) Phosphate eliminates applicator lap marks, swirl lines, and recoat whitening on VCT, terrazzo, and linoleum floors.

Preventing Winter "Powdering" and Film Cracking Under High-Speed Floor Burnishers: Because volatile glycol ethers evaporate out of floor polish films within 24 hours, unplasticized high-Tg acrylic polishes shatter into white dust ("powdering") when burnished at 1,500–2,500 rpm in dry winter air; TBEP Tris(2-butoxyethyl) Phosphate remains permanently in the film to absorb burnishing shear and impact without softening surface dirt resistance.

Solving Sub-Zero Brittleness and Cold-Cracking in Polar Rubbers (NBR, CR) and PVC: With an ultra-low pour point of -70 °C and strong polar solvation power, TBEP Tris(2-butoxyethyl) Phosphate prevents NBR fuel hoses, neoprene seals, and PVC tarpaulins from stiffening and cracking at arctic temperatures down to -50 to -58 °C.

Eliminating Silicone Defoamer Craters and Recoat Delamination in Waterborne Coatings & Inks: Replacing or reducing silicone antifoams with 0.3% to 1.0% w/w TBEP Tris(2-butoxyethyl) Phosphate ruptures entrained micro-foam and pinholes during roll, curtain, or flexo application while ensuring 100% inter-coat adhesion and heat-sealability.

Reducing High PVC Plastisol Viscosity and Slow Vacuum De-Airing: Incorporating 5 to 15 phr TBEP Tris(2-butoxyethyl) Phosphate into high-solids PVC plastisols cuts paste viscosity by up to 45% and accelerates bubble release during rotational molding, dip coating, and vinyl flooring production.

Replacing Ortho-Phthalates and Halogenated Flame Retardants (TCPP / TDCPP): Because TBEP Tris(2-butoxyethyl) Phosphate is 100% halogen-free (0% Cl/Br) and phthalate-free while supplying 7.78% elemental phosphorus, it helps formulators meet halogen-free flame-retardant and non-phthalate elastomer/coating specifications.

BENEFITS FOR THE MANUFACTURER AND END USER

- Four-in-One Multifunctional Efficiency: A single addition of TBEP Tris(2-butoxyethyl) Phosphate delivers permanent plasticization, MFFT coalescence reduction, surfactant-like flow/leveling, and non-silicone micro-foam de-airing—simplifying raw material inventories.
- Exceptional Low-Temperature Liquidity and Cold-Flex Performance: With a pour point of -70 °C and low dynamic viscosity (12 mPa·s at 20 °C), TBEP Tris(2-butoxyethyl) Phosphate can be pumped and metered year-round in unheated warehouses without crystallization and imparts -55 °C cold flexibility to cured polymers.
- Ultra-Low Volatility and Permanent Film Retention: With a vapor pressure < 0.01 Pa at 25 °C and a high flash point (224 °C open cup), TBEP Tris(2-butoxyethyl) Phosphate exhibits minimal VOC evaporation loss during oven curing and does not fog or volatilize out of finished floor finishes or rubber parts.
- Water-White Clarity and Non-Yellowing UV Stability: Manufactured to <= 30–50 APHA color and free of aromatic rings (unlike tricresyl phosphate TCP or cresyl diphenyl phosphate CDP), TBEP Tris(2-butoxyethyl) Phosphate does not yellow under indoor fluorescent lighting or UV exposure in clear topcoats and light-colored vinyl/rubber goods.
- Favorable Environmental Degradability Profile Compared to Chlorinated Phosphates: Unlike persistent chlorinated alkyl phosphates (TCEP, TCPP, TDCPP), TBEP Tris(2-butoxyethyl) Phosphate is inherently/readily biodegradable under aerobic OECD 301B testing, exhibits a very low bioconcentration factor in fish (BCF <= 5.8 per OECD 305C), and is not classified as PBT or vPvB under EU REACH.

APPLICATIONS OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

TBEP Tris(2-butoxyethyl) Phosphate is utilized across a wide spectrum of polymer, coating, floor-care, elastomer, ink, adhesive, and textile applications:
TBEP Tris(2-butoxyethyl) Phosphate is utilized as the primary permanent leveling agent, coalescent, and gloss-enhancing plasticizer in Institutional, Commercial, and Household Self-Polishing Acrylic, Styrene-Acrylic, and Urethane Floor Polishes, Floor Finishes, Wax Emulsions, and Terrazzo/VCT Sealers.
TBEP Tris(2-butoxyethyl) Phosphate is used for low-temperature cold-flex plasticization, flame retardancy, and rapid filler wetting in Acrylonitrile-Butadiene Rubber (NBR), Hydrogenated NBR (HNBR), Polychloroprene (CR / Neoprene), Styrene-Butadiene Rubber (SBR), Chlorinated Rubber, and Epichlorohydrin Elastomer Compounds (hoses, gaskets, O-rings, conveyor belts, cable jackets, and medical blood-specimen tube rubber stoppers).
Also TBEP Tris(2-butoxyethyl) Phosphate is utilized in the preparation of Waterborne Architectural Paints, Industrial Wood and Metal Emulsion Coatings, Electrodeposition Coatings, and Paper/Paperboard Overprint Varnishes (OPV) as a non-silicone flow, leveling, crater-eliminating, and de-airing coalescent.

For Polyvinyl Chloride (PVC) Plastisols, Organosols, Calendered Vinyl Films, Tarpaulins, and Artificial Leather, TBEP Tris(2-butoxyethyl) Phosphate is used as a low-viscosity plastisol rheology depressant, air-release aid, and cold-crack-resistant flame-retardant secondary plasticizer.
In Nitrocellulose (NC), Ethyl Cellulose, Cellulose Acetate Butyrate (CAB), Thermoplastic Acrylic, and Two-Component Polyurethane Lacquers and Wood Finishes, TBEP Tris(2-butoxyethyl) Phosphate is employed to prevent film checking, cold-cracking, and blush while imparting flame retardancy and high gloss.
Furthermore, TBEP Tris(2-butoxyethyl) Phosphate is applied in Waterborne Flexographic and Gravure Printing Inks, Inkjet Dispersions, and Water-Based Packaging Adhesives (EVA, VAE, and Acrylic Emulsions) to improve substrate wetting on low-energy plastic films, eliminate micro-foam pinholes, and enhance low-temperature bond flexibility.
Additionally, TBEP Tris(2-butoxyethyl) Phosphate is utilized as a readily biodegradable, non-silicone antifoam/de-airing agent, fiber lubricant, and leveling auxiliary in Textile Wet Processing, Dyeing, Printing Pastes, Synthetic Latex Manufacturing, Fire-Resistant Hydraulic Fluids, and Metal Corrosion Inhibitor Formulations.

WHICH INDUSTRIES USE TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE?

- The Institutional & Industrial (I&I) Floor Care, Building Maintenance, and Household Surface Polish Industry uses TBEP Tris(2-butoxyethyl) Phosphate as the standard leveling plasticizer for high-speed burnishable and mop-on floor finishes.
- The Synthetic Rubber, Automotive Elastomer, Industrial Hose, Belting, and Medical Rubber Stopper Manufacturing Industry utilizes TBEP Tris(2-butoxyethyl) Phosphate to achieve -55 °C low-temperature flexibility and halogen-free flame resistance in NBR and CR vulcanizates.
- The Architectural Paint, Waterborne Industrial Coating, Wood Lacquer, and Paper Coating Industry relies on TBEP Tris(2-butoxyethyl) Phosphate for silicone-free flow leveling, MFFT coalescence reduction, and micro-foam air release.
- The PVC Plastisol, Flexible Vinyl, Artificial Leather, Conveyor Belt, and Coated Fabric Industry employs TBEP Tris(2-butoxyethyl) Phosphate to reduce plastisol paste viscosity, accelerate de-airing, and improve cold-flex durability.
- The Printing Ink, Overprint Varnish (OPV), and Waterborne Adhesive & Sealant Industry uses TBEP Tris(2-butoxyethyl) Phosphate to enhance film wetting, gloss, anti-foaming, and sub-zero adhesive tack.
- The Textile Wet Processing, Dyeing, Leather Finishing, Functional Hydraulic Fluid, and Corrosion Inhibitor Industry utilizes TBEP Tris(2-butoxyethyl) Phosphate as a non-silicone defoamer, leveling penetrant, and anti-wear lubricity ester.

USE OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE IN FLOOR POLISHES, WATERBORNE COATINGS AND GRAPHIC ARTS

- Institutional and Household Acrylic Floor Polishes & Wax Finishes with TBEP Tris(2-butoxyethyl) Phosphate: In zinc-crosslinked or zirconium-crosslinked styrene-acrylic and pure acrylic floor finishes (typically 16% to 25% non-volatile solids), TBEP Tris(2-butoxyethyl) Phosphate is the single most critical permanent coalescent and leveling additive. Formulators pair TBEP Tris(2-butoxyethyl) Phosphate (at 0.8% to 2.2% w/w of the total wet formula, corresponding to ~5% to 12% w/w on dry polymer solids) with fugitive glycol ethers such as Diethylene Glycol Monoethyl Ether (Carbitol, 2.0% to 4.5% w/w) or Dipropylene Glycol Methyl Ether (DPM, 1.5% to 3.5% w/w) and a trace fluorosurfactant or dynamic wetting aid (0.01% to 0.05% w/w). During application, TBEP Tris(2-butoxyethyl) Phosphate ensures that consecutive coats wet out without crawling, ridge marks, or ghosting, dries to a deep "wet-look" 60° specular gloss (> 85 to 92 Gloss Units on black vinyl tile), prevents brittle powdering under ultra-high-speed (2,000 rpm) propane or electric burnishers, and remains fully removable when stripped with alkaline amine/butoxyethanol floor strippers.
- Waterborne Architectural Paints, Wood Coatings, Printing Inks, and Adhesives with TBEP Tris(2-butoxyethyl) Phosphate: In low-VOC waterborne acrylic, styrene-acrylic, vinyl-acrylic, VAE (vinyl acetate-ethylene), and polyurethane dispersions (PUDs), replacing or supplementing volatile coalescents (like Texanol or butyl diglycol) with 0.3% to 1.5% w/w TBEP Tris(2-butoxyethyl) Phosphate simultaneously reduces MFFT, eliminates micro-foam pinholes during airless spray or roller application, improves pigment dispersion stability, and enhances wet-edge open time without leaving silicone craters that ruin multi-coat adhesion.

USE OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE IN SYNTHETIC RUBBER (NBR / CR), PVC PLASTISOLS AND CELLULOSICS

- Synthetic Rubber and Elastomer Compounding (NBR, HNBR, CR, SBR, Chlorinated Rubber) with TBEP Tris(2-butoxyethyl) Phosphate: In polar elastomers—particularly Acrylonitrile-Butadiene Rubber (NBR with 18% to 45% acrylonitrile content) and Polychloroprene (CR)—TBEP Tris(2-butoxyethyl) Phosphate is dosed at 8 to 25 phr (parts per hundred rubber) either alone or in combination with dioctyl sebacate (DOS), dioctyl adipate (DOA), or trioctyl phosphate (TOF). Because TBEP Tris(2-butoxyethyl) Phosphate has a solubility parameter (~18.8 MPa^1/2) closely matched to NBR and CR and a pour point of -70 °C, it incorporates rapidly on two-roll mills or in Banbury internal mixers, reduces Mooney compound viscosity (ML 1+4 at 100 °C) by 8 to 18 points, prevents scorch, and yields vulcanizates that pass low-temperature brittle point and Gehman torsion stiffness tests at -50 to -58 °C while contributing flame retardancy for underground mining conveyor belts, aviation hoses, and automotive fuel/hydraulic seals. In pharmaceutical and clinical diagnostics, high-purity TBEP Tris(2-butoxyethyl) Phosphate is also utilized as a specialized plasticizer in synthetic butyl/halobutyl/NBR rubber stoppers for evacuated blood-collection tubes.
- PVC Plastisols, Organosols, and Cellulosic Lacquers with TBEP Tris(2-butoxyethyl) Phosphate: In PVC plastisols for rotational molding, dip coating, screen printing, and vinyl flooring wear layers, adding 5 to 15 phr of TBEP Tris(2-butoxyethyl) Phosphate alongside primary plasticizers (such as DOTP, DINP, or alkyl sulfonic phenyl esters) slashes initial plastisol viscosity by 30% to 50%, accelerates vacuum de-airing of trapped air bubbles, lowers gelation/fusion temperature, and imparts both cold-crack resistance and reduced flame spread. In nitrocellulose (NC) and cellulose acetate butyrate (CAB) wood, leather, and paper lacquers, 5% to 15% w/w TBEP Tris(2-butoxyethyl) Phosphate on resin solids prevents thermal and cold checking while maintaining crystal-clear film transparency.

FORMULATION AND PROCESS CONSIDERATIONS WHEN USING TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

Shock-Free Addition of TBEP Tris(2-butoxyethyl) Phosphate into Aqueous Latex Emulsions:
Never dump pure, undiluted TBEP Tris(2-butoxyethyl) Phosphate rapidly into an unstirred or high-solids acrylic latex emulsion, as localized droplets of pure TBEP can over-solvate adjacent polymer particles and form soft gel specks ("seed" or "grit"). Always pre-blend TBEP Tris(2-butoxyethyl) Phosphate with the water-miscible glycol ether coalescents (Carbitol, DPM, or butyl glycol) and an equal weight of warm deionized water (or 0.1% nonionic surfactant), then meter the pre-mix slowly subsurface into the vortex-free agitated emulsion over 15 to 30 minutes, followed by at least 30 minutes of equilibration stirring before adding wax emulsions.

Optimizing the TBEP-to-Polymer Ratio in Floor Polishes to Avoid Soil Pickup:
In institutional floor finishes, the golden rule is 6% to 10% w/w TBEP Tris(2-butoxyethyl) Phosphate calculated on dry acrylic polymer solids (typically 1.2% to 1.8% w/w in a 20% solids polish). Under-dosing (< 0.7% w/w TBEP) results in mop ridges, poor cold-room coalescence, and burnishing powdering; over-dosing (> 2.8% w/w TBEP in a standard 20% polish) over-softens the cured film (lowering Koenig pendulum hardness), which can increase black heel-mark retention and soil embedding under heavy foot traffic.

Dry-Liquid Concentrates and Split Addition in Rubber Mixing:
When compounding > 15 phr of liquid TBEP Tris(2-butoxyethyl) Phosphate into NBR or CR on an internal mixer, either split the TBEP addition into two increments with carbon black / mineral fillers to maintain rotor friction, or pre-absorb TBEP Tris(2-butoxyethyl) Phosphate at 70% to 72% w/w onto precipitated amorphous silica (such as 28%–30% precipitated silica carrier) to form a free-flowing "dry-liquid" TBEP powder for automated weigh-scale dosing.

TYPICAL USE LEVELS AND INITIAL FORMULATION APPROACHES FOR TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

Typical commercial incorporation levels for TBEP Tris(2-butoxyethyl) Phosphate depend on the polymer matrix, target glass transition temperature (Tg / MFFT), and surface leveling or cold-flex specification:
- Institutional & Household Self-Polishing Acrylic / Styrene-Acrylic Floor Finishes (18%–25% Solids): TBEP Tris(2-butoxyethyl) Phosphate is incorporated at 0.8% to 2.5% w/w on total wet polish formula (typically 1.2% to 1.8% w/w, equivalent to 6.0% to 10.0% w/w on dry polymer solids, paired with 2.0%–4.0% w/w Carbitol or DPM glycol ether).
- High-Solids UHS Burnishable Floor Polishes and Concrete/Terrazzo Sealers (25%–30% Solids): TBEP Tris(2-butoxyethyl) Phosphate is dosed at 1.5% to 3.0% w/w on total wet formula to prevent high-speed burnishing powdering and eliminate applicator lap marks.
- Acrylonitrile-Butadiene Rubber (NBR) and Polychloroprene (CR / Neoprene) Cold-Flex Compounds: TBEP Tris(2-butoxyethyl) Phosphate is compounded at 8.0 to 25.0 phr (parts per hundred rubber, typically 12.0 to 20.0 phr) as a primary or secondary low-temperature flame-retardant plasticizer.
- PVC Plastisols, Rotational Molding Pastes, and Vinyl Flooring Wear Layers: TBEP Tris(2-butoxyethyl) Phosphate is utilized at 4.0 to 15.0 phr as a plastisol viscosity depressant, de-airing agent, and cold-crack plasticizer alongside 40 to 70 phr primary plasticizer (DOTP/DINP/TCP).
- Waterborne Architectural Paints, Wood Coatings, and Polyurethane Dispersions (PUDs): TBEP Tris(2-butoxyethyl) Phosphate is added at 0.3% to 1.5% w/w on total coating weight (1.5% to 5.0% w/w on binder solids) as a permanent coalescent, leveling modifier, and non-silicone micro-foam release agent.
- Waterborne Flexographic/Gravure Printing Inks, Overprint Varnishes (OPV), and Packaging Adhesives: TBEP Tris(2-butoxyethyl) Phosphate is dosed at 0.2% to 1.2% w/w to improve wetting on treated PE/PP/PET films, eliminate pinholes, and preserve low-temperature bond flexibility.
- Nitrocellulose (NC), Ethyl Cellulose, and CAB Solvent-Borne Lacquers: TBEP Tris(2-butoxyethyl) Phosphate is used at 5.0% to 18.0% w/w calculated on dry cellulose ester weight.
- Textile Dyeing, Printing Pastes, and Paper Coating Slurries (Non-Silicone Defoamer / Penetrant): TBEP Tris(2-butoxyethyl) Phosphate is applied at 0.05% to 0.50% w/w (0.5 to 5.0 g/L) in bath or coating formulations.
The four laboratory and pilot frameworks below illustrate preliminary R&D evaluation protocols for qualified technical personnel formulating with TBEP Tris(2-butoxyethyl) Phosphate.

EXAMPLE 1: BENCH-SCALE FORMULATION AND LEVELING EVALUATION OF A 20% SOLIDS HIGH-GLOSS ZINC-CROSSLINKED ACRYLIC FLOOR POLISH

Purpose: To evaluate film coalescence at 10 °C, mop-application leveling ("X-mark" leveling test per ASTM D3153 / CSMA Bulletin), 60-degree specular gloss (ASTM D1455), recoatability, and 50 °C oven stability in a 20% non-volatile solids institutional floor finish plasticized with TBEP Tris(2-butoxyethyl) Phosphate.
Initial screening formulation (per 1,000.0 g batch, pH 8.4 to 8.8, total non-volatile solids ~20.0% w/w):
- Deionized Water (initial charge): 344.2 g
- Diethylene Glycol Monoethyl Ether (Carbitol, volatile hydrophilic coalescent): 30.0 g (3.0% w/w)
- Dipropylene Glycol Monomethyl Ether (DPM, intermediate evaporation coalescent): 15.0 g (1.5% w/w)
- TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3, Ataman Kimya Floor-Polish Grade, assay >= 99.0%, color <= 35 APHA, acid value <= 0.05 mg KOH/g, permanent leveling plasticizer): 15.0 g (1.5% w/w on total formula; 9.4% w/w on dry acrylic polymer)
- Nonionic Fluorosurfactant Wetting Solution (1.0% w/w active in water): 3.0 g (delivering 30 ppm active fluorosurfactant)
- Polydimethylsiloxane Emulsion Antifoam (10% active, added in trace amount): 0.3 g (0.03% w/w)
- 1,2-Benzisothiazolin-3-one (BIT, 20% aqueous biocide): 1.5 g (0.15% w/w)
- Zinc-Crosslinked Styrene-Acrylic Floor Polish Polymer Emulsion (38.0% non-volatile solids, Tg ~+55 °C, pH 8.3): 421.0 g (delivering 16.0% w/w dry acrylic polymer)
- Alkali-Soluble Styrene-Maleic Anhydride / Acrylic Leveling Resin Solution (25.0% solids in aqueous ammonia, pH 8.8): 60.0 g (delivering 1.5% w/w dry alkali-soluble resin)
- Oxidized High-Density Polyethylene (HDPE) Nonionic Wax Emulsion (35.0% solids, particle size < 60 nm, slip/scuff modifier): 71.5 g (delivering 2.5% w/w dry polyethylene wax)
- Deionized Water (for pre-diluting TBEP/glycol ether blend and final weight balance): 38.5 g
Laboratory evaluation procedure:
- Stage 1 (Coalescent & Leveling Pre-Mix Preparation): In a clean stainless-steel or glass auxiliary vessel, blend the 30.0 g Diethylene Glycol Monoethyl Ether, 15.0 g Dipropylene Glycol Monomethyl Ether, and 15.0 g TBEP Tris(2-butoxyethyl) Phosphate for 5 minutes until a homogeneous clear organic solution is obtained, then dilute with 38.5 g deionized water under moderate agitation. Pre-blending TBEP Tris(2-butoxyethyl) Phosphate with the glycol ethers prevents localized "shocking" or coagulum formation when added to the high-Tg acrylic emulsion.
- Stage 2 (Emulsion Let-Down and Partition Equilibration): Charge the 344.2 g deionized water, 1.5 g BIT biocide, 3.0 g fluorosurfactant solution, and 0.3 g antifoam into the main mixing vessel at 20 to 25 °C under low-shear propeller agitation (250 to 350 rpm, avoiding vortex air entrainment). Slowly add the 421.0 g zinc-crosslinked styrene-acrylic emulsion and 60.0 g alkali-soluble resin solution and mix for 15 minutes. Gradually meter in the pre-mixed TBEP Tris(2-butoxyethyl) Phosphate / glycol ether / water blend over 20 minutes via subsurface dip-tube, stir for 30 minutes to allow TBEP Tris(2-butoxyethyl) Phosphate to partition into the latex particles, and finally blend in the 71.5 g oxidized HDPE wax emulsion for 15 minutes. Let the finished batch equilibrate overnight (16 to 24 hours) and filter through a 100-micron bag filter.
- Stage 3 (Performance and Quality Control Testing): Verify Brookfield LV viscosity (Spindle No. 1, 60 rpm: target 4.5 to 7.0 mPa·s), pH (8.4 to 8.8), and 10 °C cold-room film formation on sealed black vinyl composition tile (VCT) panels (zero cracking or whitening). Apply 4 coats at 2,000 sq ft/gal (49 m2/L) with 30-minute recoat intervals using a cheesecloth swatch, striking a diagonal "X" across the drying film at 50% dry-to-touch time: verify complete leveling disappearance of the "X" ridges, 60° specular gloss >= 88 GU, zero powdering in the Crockmeter abrasion test at 10 °C / 20% RH, and complete emulsion stability after 30 days at 52 °C (ASTM D1791) and 3 freeze-thaw cycles (ASTM D3209).

EXAMPLE 2: LOW-TEMPERATURE (-55 °C) FUEL- AND FLAME-RESISTANT ACRYLONITRILE-BUTADIENE RUBBER (NBR) COMPOUNDING WITH TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

Purpose: To evaluate Banbury mixing incorporation time, Mooney viscosity reduction, tensile properties, Shore A hardness, and low-temperature brittle point (ASTM D2137) of a medium-acrylonitrile NBR elastomer compound plasticized with 18.0 phr TBEP Tris(2-butoxyethyl) Phosphate.
Initial rubber compound formulation (expressed in parts per hundred rubber, phr):
- Acrylonitrile-Butadiene Rubber (NBR, 33% acrylonitrile content, Mooney viscosity ML(1+4)100°C = 45): 100.0 phr
- Zinc Oxide (french-process active ZnO vulcanization activator): 5.0 phr
- Stearic Acid (rubber-grade processing aid / activator): 1.0 phr
- Semi-Reinforcing Furnace Carbon Black (SRF N774, low-heat-buildup filler): 60.0 phr
- Antimony Trioxide (Sb2O3) + Magnesium Hydroxide (flame-retardant mineral co-fillers): 15.0 phr
- TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3, Ataman Kimya Elastomer Grade, pour point -70 °C, low-temperature flame-retardant plasticizer): 18.0 phr
- Polymerized 2,2,4-Trimethyl-1,2-dihydroquinoline (TMQ, antioxidant): 1.5 phr
- Sulfur (rhombic 325-mesh vulcanizing agent): 1.5 phr
- N-Cyclohexyl-2-benzothiazolesulfenamide (CBS) + Tetramethylthiuram Disulfide (TMTD) Accelerators: 1.5 phr CBS + 0.5 phr TMTD (Total batch weight: 204.0 phr)
Laboratory evaluation procedure:
- Stage 1 (Internal Banbury Mixing of Masterbatch): Masticate the 100.0 phr NBR polymer in a 1.5 L laboratory internal mixer (chamber starting temperature 50 °C, rotor speed 60 rpm) for 60 seconds. Add the 5.0 phr ZnO, 1.0 phr stearic acid, 1.5 phr TMQ, and half of the carbon black / mineral fillers at 1.0 minute; at 2.5 minutes, add the remaining fillers concurrently with the 18.0 phr liquid TBEP Tris(2-butoxyethyl) Phosphate, sweeping the ram at 4.0 minutes and dumping the masterbatch at 5.5 minutes (dump temperature <= 135 °C). Note how rapidly the low-viscosity (12 mPa·s) TBEP Tris(2-butoxyethyl) Phosphate wets the N774 carbon black without rotor slippage.
- Stage 2 (Two-Roll Mill Curative Addition and Press Vulcanization): Sheet out the cooled masterbatch on a water-cooled two-roll open mill (roll temperature 40 to 50 °C) and blend in the 1.5 phr sulfur, 1.5 phr CBS, and 0.5 phr TMTD curatives until uniform. Measure Mooney viscosity ML(1+4) at 100 °C (target ~32 to 38 MU) and MDR 2000 rheometer cure curve at 160 °C (t90 ~6.5 to 8.0 minutes). Compression-mold 2.0 mm test slabs at 160 °C for t90 + 2 minutes under 15 MPa hydraulic pressure.
- Stage 3 (Mechanical, Cold-Flex, and Exudation Testing): Condition vulcanized NBR sheets for 24 hours at 23 °C and determine Shore A hardness (target 60 to 63 Shore A), tensile strength (>= 15.5 MPa), elongation at break (>= 420%), ASTM D2137 low-temperature non-brittle pass temperature (target <= -52 to -55 °C), Gehman T10 torsional modulus temperature (ASTM D1053), UL 94 / LOI flame resistance, and zero surface exudation ("sweating") after 14 days at 70 °C.

EXAMPLE 3: PVC PLASTISOL VISCOSITY DEPRESSION, AIR-RELEASE, AND COLD-CRACK EVALUATION FOR VINYL COATED FABRICS

Purpose: To evaluate initial and 7-day aged Brookfield plastisol paste viscosity, vacuum de-airing speed, and -35 °C cold-crack resistance of a flexible PVC plastisol modified with 10.0 phr TBEP Tris(2-butoxyethyl) Phosphate.
Initial PVC plastisol formulation (parts per hundred resin, phr):
- Emulsion / Micro-Suspension Paste PVC Homopolymer Resin (K-value 70, bimodal particle size): 100.0 phr
- Dioctyl Terephthalate (DOTP, non-phthalate primary plasticizer) or Tricresyl Phosphate (TCP): 52.0 phr
- TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3, Ataman Kimya Plastisol Grade, viscosity 12 mPa·s at 20 °C, viscosity depressant, de-airing agent, and cold-flex flame-retardant plasticizer): 10.0 phr
- Epoxidized Soybean Oil (ESBO, oxirane oxygen >= 6.5%, secondary heat stabilizer): 3.0 phr
- Liquid Calcium-Zinc (Ca/Zn) or Barium-Zinc (Ba/Zn) Mixed-Metal Thermal Stabilizer: 2.0 phr
- Precipitated Calcium Carbonate (uncoated low-oil-absorption filler): 15.0 phr (Total plastisol: 182.0 phr)
Laboratory evaluation procedure:
- Charge the 52.0 phr primary plasticizer, 10.0 phr TBEP Tris(2-butoxyethyl) Phosphate, 3.0 phr ESBO, and 2.0 phr Ca/Zn stabilizer into a planetary vacuum dissolver at 23 °C and mix for 3 minutes.
- Add the 100.0 phr paste PVC resin and 15.0 phr calcium carbonate incrementally under medium shear (keeping paste temperature < 32 °C) for 20 minutes, then apply 20 mbar vacuum for 10 minutes to de-air the plastisol.
- Compare the TBEP-modified plastisol against a control containing 62.0 phr DOTP alone: measure Brookfield RVT viscosity at 2 rpm and 20 rpm after 2 hours and 7 days at 23 °C (confirming 35% to 45% lower paste viscosity and near-Newtonian high-shear leveling with TBEP Tris(2-butoxyethyl) Phosphate), measure foam height collapse time during vacuum de-airing (confirming 2x faster bubble collapse due to TBEP's 30 mN/m surface tension), fuse 0.50 mm drawdowns at 190 °C for 3 minutes, and verify zero cold-cracking on the -35 °C cold-slam mandrel test (ISO 4675).

EXAMPLE 4: SILICONE-FREE DE-AIRING AND COALESCENCE IN A WATERBORNE OVERPRINT VARNISH (OPV) AND PACKAGING ADHESIVE

Purpose: To evaluate micro-foam elimination, dynamic wetting on corona-treated polypropylene/polyethylene film (38 dynes/cm), and inter-coat recoatability in a waterborne acrylic Overprint Varnish (OPV) modified with 0.8% w/w TBEP Tris(2-butoxyethyl) Phosphate.
Initial waterborne OPV formulation (per 1,000.0 g batch, solids ~42.0% w/w, viscosity 22–26 seconds Zahn Cup No. 2 at 25 °C):
- Styrene-Acrylic Emulsion for Graphic Arts OPV (45.0% solids, MFFT 18 °C, pH 8.2): 680.0 g
- Alkali-Soluble Styrene-Acrylic Resin Solution (30.0% solids in ammoniacal water, pigment/substrate wetting resin): 220.0 g
- Polyethylene / Carnauba Wax Dispersion (35.0% solids, rub resistance aid): 40.0 g
- TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3, Ataman Kimya Coating Grade, non-silicone de-airing, leveling, and MFFT coalescing modifier): 8.0 g (0.8% w/w)
- Dipropylene Glycol Methyl Ether (DPM, co-solvent): 12.0 g (1.2% w/w)
- Deionized Water + Aqueous Ammonia (25% NH3, to adjust pH 8.5 and viscosity): 40.0 g
Laboratory evaluation procedure:
- Pre-blend the 8.0 g TBEP Tris(2-butoxyethyl) Phosphate with the 12.0 g DPM and 20.0 g deionized water, then meter slowly into the agitated blend of styrene-acrylic emulsion and alkali-soluble resin solution at 400 rpm over 15 minutes.
- Add the 40.0 g wax dispersion and remaining ammoniacal water, then subject a 250 mL aliquot to a high-speed Waring blender foam test (3,000 rpm for 60 seconds): measure wet density immediately after shearing and confirm >= 98% air release within 2 minutes without any silicone oil droplets.
- Apply the OPV onto printed paperboard and corona-treated BOPP film using a No. 4 wire-wound Meyer rod, dry at 60 °C for 30 seconds, and verify pinhole-free leveling, 60° gloss >= 75 GU, zero cratering, and 100% cross-hatch adhesion (ASTM D3359) when over-printed with UV ink or hot-melt packaging adhesive.

COMPATIBILITY AND INCOMPATIBILITY OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

- Synergistic Co-Additives with TBEP Tris(2-butoxyethyl) Phosphate:
  - In Floor Polishes & Waterborne Coatings: TBEP Tris(2-butoxyethyl) Phosphate exhibits classic synergy with Diethylene Glycol Monoethyl Ether (Carbitol), Dipropylene Glycol Methyl Ether (DPM), Ethylene Glycol Phenyl Ether (EPH), nonionic fluorosurfactants or polyether-modified trisiloxanes (at 20–50 ppm), zinc ammonium carbonate crosslinkers, and oxidized HDPE/polypropylene/carnauba wax emulsions.
  - In NBR, CR, and PVC Compounding: TBEP Tris(2-butoxyethyl) Phosphate pairs synergistically with dioctyl adipate (DOA), dioctyl sebacate (DOS), dioctyl terephthalate (DOTP), epoxidized soybean oil (ESBO), antimony trioxide (Sb2O3), aluminum trihydrate (ATH), and magnesium hydroxide (MDH).
- Material & Chemical Incompatibilities:
  - Strong Oxidizing Agents and Strong Reducing Agents: As noted in industrial safety data sheets for TBEP Tris(2-butoxyethyl) Phosphate (such as Amgard TBEP), organophosphates are incompatible with strong oxidizing agents (concentrated nitric acid, peroxides, permanganates, chlorates, which can cause exothermic oxidation releasing toxic phosphorus oxides) and strong reducing agents such as metal hydrides (such as LiAlH4 or NaBH4, which can reduce organophosphates to toxic, flammable phosphine gas PH3).
  - Strong Acids and Strong Caustic Alkalies at Elevated Temperatures: Prolonged contact with concentrated mineral acids or hot concentrated NaOH/KOH (> 60 °C, pH > 12.5 or pH < 2.0) hydrolyzes the phosphate ester linkages of TBEP Tris(2-butoxyethyl) Phosphate into 2-butoxyethanol and mono-/di-butylglycol phosphoric acid salts. (At normal ambient temperatures of 15 to 35 °C and pH 7.0 to 9.5 typical of ammoniacal acrylic floor polishes, TBEP Tris(2-butoxyethyl) Phosphate is hydrolytically stable for > 2 years.)
  - Unsuitable Container Plastics for Pure Undiluted TBEP: Because pure TBEP Tris(2-butoxyethyl) Phosphate is a powerful solvating plasticizer, undiluted TBEP will soften, swell, or stress-crack unplasticized PVC, polystyrene (PS), ABS, polycarbonate (PC), and acrylic (PMMA) pipes or containers; store and transfer pure TBEP only in stainless steel, carbon steel, baked phenolic-lined steel, high-density polyethylene (HDPE), polypropylene (PP), or PTFE/Viton-gasketed equipment.

SIMILAR PRODUCTS AND ALTERNATIVES TO TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

When designing an institutional floor polish, waterborne coating, synthetic rubber compound, or PVC plastisol, formulators frequently compare TBEP Tris(2-butoxyethyl) Phosphate against four alternative phosphate esters and coalescents.

TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE AND TRIBUTYL PHOSPHATE (TBP, CAS 126-73-8)

Tributyl Phosphate (TBP, C12H27O4P, MW 266.31 g/mol) is a lower-molecular-weight trialkyl phosphate lacking the three internal ethoxy-ether linkages (-O-CH2-CH2-O-) of TBEP Tris(2-butoxyethyl) Phosphate. While TBP is a strong solvent for nitrocellulose and a defoamer in concrete/paper slurries, TBP has a stronger odor, much higher volatility, lower flash point, and poor compatibility/leveling behavior in acrylic floor polishes (where TBP evaporates prematurely and causes film tack). TBEP Tris(2-butoxyethyl) Phosphate (MW 398.47 g/mol) provides permanent non-volatile plasticization, superior Marangoni leveling in floor finishes, and much better low-temperature permanence in NBR/CR rubber.

TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE AND TRIS(2-ETHYLHEXYL) PHOSPHATE (TOF / TEHP, CAS 78-42-2)

Tris(2-ethylhexyl) Phosphate (TOF / TEHP, C24H51O4P, MW 434.63 g/mol) is a purely hydrophobic branched trialkyl phosphate (log Kow > 6.0, water solubility < 0.001 g/L) lacking ethoxy-ether oxygens. While TOF is an excellent non-polar cold-flex plasticizer for PVC and NBR, TOF lacks the amphiphilic ether polarity of TBEP Tris(2-butoxyethyl) Phosphate and cannot function as a leveling or coalescing agent in waterborne acrylic floor polishes or emulsion coatings.

TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE AND TRIS(2-CHLOROISOPROPYL) PHOSPHATE (TCPP, CAS 13674-84-5)

TCPP is a chlorinated alkyl phosphate flame retardant (~32.5% chlorine) widely used in rigid and flexible polyurethane foams. Compared to TBEP Tris(2-butoxyethyl) Phosphate, TCPP has a much higher pour point (-40 °C versus -70 °C for TBEP), five-fold higher viscosity (~65 mPa·s versus 12 mPa·s for TBEP at 20 °C), poor low-temperature rubber plasticizing efficiency, and increasing regulatory restrictions over organohalogen persistence. TBEP Tris(2-butoxyethyl) Phosphate is 100% halogen-free (0% Cl), biodegrades readily (OECD 301B), and delivers superior cold-flex and leveling performance.

TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE AND VOLATILE GLYCOL ETHER COALESCENTS (CARBITOL, DPM, TEXANOL)

Volatile coalescents such as Diethylene Glycol Monoethyl Ether (Carbitol, CAS 111-90-0), Dipropylene Glycol Methyl Ether (DPM, CAS 34590-94-8), and 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate (Texanol, CAS 25265-77-4) temporarily soften latex particles during drying but evaporate out of the film within days, leaving high-Tg floor polish films brittle and prone to high-speed burnishing powdering. TBEP Tris(2-butoxyethyl) Phosphate acts as a permanent coalescent-plasticizer that stays in the cured film for the entire service life of the floor finish, which is why industry-standard floor polishes combine 1.0% to 1.8% TBEP Tris(2-butoxyethyl) Phosphate with 2.0% to 4.0% Carbitol or DPM.

QUALITY GRADES, QUALITY CONTROL AND PURCHASING CRITERIA FOR TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

TBEP Tris(2-butoxyethyl) Phosphate is supplied in three tailored industrial grades based on purity, color, and residual monomer limits:

Premium Floor-Polish & Waterborne Coating Grade TBEP Tris(2-butoxyethyl) Phosphate (KP-140 / Low-Odor Grade):
Engineered specifically for institutional/household acrylic floor polishes, clear overprint varnishes, and architectural emulsions. Features ester assay >= 99.2% w/w, ultra-low color <= 25 to 40 APHA, ultra-low acid value <= 0.05 mg KOH/g (preventing ammonia neutralization drift or zinc-chelate destabilization in floor finishes), moisture <= 0.10% w/w, and vacuum-stripped low odor (free 2-butoxyethanol <= 0.08% w/w).

Elastomer, PVC Plastisol & Flame-Retardant Polymer Grade TBEP Tris(2-butoxyethyl) Phosphate (Amgard TBEP / Phosflex T-BEP Equivalent):
Designed for NBR, HNBR, CR, SBR, chlorinated rubber, PVC plastisols, polyurethane foams/coatings, and cellulosic lacquers. Features assay >= 99.0% w/w, phosphorus content 7.8 +/- 0.5% w/w, color <= 50 APHA, acid value <= 0.08 to 0.10 mg KOH/g, water <= 0.15% w/w, dynamic viscosity 11 to 15 mPa·s at 20 °C, and pour point <= -70 °C.

High-Purity Medical Stopper & Analytical Grade TBEP Tris(2-butoxyethyl) Phosphate:
Specially refined grade with tightly controlled chromatographic purity (>= 99.5% GC) and verified trace-metal and extractable profiles for specialized laboratory elastomers, blood-collection stopper compounding, and LC-MS/MS analytical reference standards.
Incoming quality verification of TBEP Tris(2-butoxyethyl) Phosphate includes GC-FID / GC-MS ester purity (>= 99.0%), ASTM D1045 acid value titration (<= 0.10 mg KOH/g), ASTM E203 Karl Fischer moisture (<= 0.15%), ASTM D1209 APHA color (<= 50), and ASTM D3153 floor-polish leveling validation.

STORAGE AND HANDLING OF TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

- Commercial Packaging Formats from Ataman Kimya:
  - 200 kg net tight-head (closed-top) steel drums (internally baked phenolic-epoxy lined or clean cold-rolled steel with 2-inch and 3/4-inch bungs, 4 drums per pallet = 800 kg).
  - 200 kg net high-density polyethylene (HDPE) L-ring drums.
  - 1,000 kg net Intermediate Bulk Containers (HDPE IBC totes in galvanized steel cages with Viton/EPDM bottom valve seals).
  - 20,000 to 24,000 kg bulk stainless-steel ISO tank containers for high-volume floor-polish, coating, and rubber manufacturers.
- Storage Conditions and Shelf Life:
  - Store TBEP Tris(2-butoxyethyl) Phosphate in tightly sealed original containers in a cool, dry, well-ventilated indoor warehouse at ambient temperatures (preferably 5 to 35 °C), away from direct sunlight, open flames, strong oxidizers, strong acids/alkalies, and atmospheric moisture.
  - Because TBEP Tris(2-butoxyethyl) Phosphate is slightly hygroscopic upon prolonged exposure to humid air (absorbing moisture slows down ester hydrolytic stability over time), keep drum bungs and IBC vents tightly closed after partial withdrawal or blanket bulk storage tanks with dry nitrogen.
  - Because its pour point is -70 °C, TBEP Tris(2-butoxyethyl) Phosphate never freezes or crystallizes in winter storage and requires no heated tank tracing.
  - Shelf Life: Minimum 24 months (2 years) from date of manufacture when stored unopened under recommended dry conditions.
- Transport Classification (ADR / RID / ADN / IMDG / IATA-DGR):
  - UN Number: Not regulated as dangerous goods for transport (Non-Hazardous Cargo under ADR, RID, IMDG Code, and IATA).
  - Marine Pollutant (IMDG): No.

FIRST AID MEASURES AND SAFETY INFORMATION FOR TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

TBEP Tris(2-butoxyethyl) Phosphate has a well-characterized industrial toxicology, environmental, and workplace hygiene profile documented under EU REACH, OECD SIDS, and WHO Environmental Health Criteria (EHC 218):
- Acute Toxicity and Neurological Profile: TBEP Tris(2-butoxyethyl) Phosphate exhibits low acute oral and dermal toxicity in mammalian studies (Rat Acute Oral LD50 = 3,000 mg/kg bw; Rabbit Acute Dermal LD50 > 5,000 mg/kg bw; Rat 4-Hour Aerosol Inhalation LC50 > 6.4 mg/L). Unlike ortho-substituted triaryl phosphates (such as tri-ortho-cresyl phosphate TOCP), aliphatic trialkyl/alkoxy phosphates like TBEP Tris(2-butoxyethyl) Phosphate do NOT induce delayed neuropathic paralysis in standard hen OPIDN assays, though high-dose overexposure to vapors/mists can cause reversible nervous system symptoms (headache, dizziness, weakness) and mild skin, eye, or respiratory tract irritation.
- Ecotoxicology and Biodegradability: Fish 96-h LC50 (Oncorhynchus mykiss, OECD 203) = 24.0 mg/L; Daphnia magna 48-h EC50 (OECD 202) = 53.0 mg/L; Green algae 72-h ErC50 (OECD 201) = 61.0 mg/L; Activated sludge EC50 (OECD 209) > 1,000 mg/L. In OECD 301B aerobic tests, TBEP Tris(2-butoxyethyl) Phosphate achieves > 80% biodegradation in 28 days (readily biodegradable) and shows an extremely low Bioconcentration Factor in carp (BCF <= 5.8 per OECD 305C; non-PBT / non-vPvB).
- Personal Protective Equipment (PPE) & Engineering Controls: Handle TBEP Tris(2-butoxyethyl) Phosphate with adequate ventilation (and local exhaust over hot rubber mills or curing ovens). Wear chemical splash goggles (EN 166), impervious butyl rubber, nitrile rubber (>= 0.4 mm), or Viton gloves (EN 374), and protective clothing.
- First Aid Measures:
  - Eye Contact: Immediately flush eyes with plenty of lukewarm running water for at least 15 minutes while holding eyelids open; seek medical attention if redness or irritation persists.
  - Skin Contact: Remove contaminated clothing and wash skin thoroughly with soap and water; seek medical attention if irritation develops.
  - Inhalation: Move the affected person to fresh air and keep at rest; seek medical attention if coughing, wheezing, shortness of breath, or dizziness occurs.
  - Ingestion: Do NOT induce vomiting; rinse mouth with water, give 1 to 2 small glasses of water if the person is conscious and not convulsing, and immediately contact a poison control center or physician.

WHAT SHOULD BE CONSIDERED WHEN PURCHASING TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE?

When purchasing TBEP Tris(2-butoxyethyl) Phosphate for institutional acrylic floor polishes and clear waterborne coatings, verify that the Certificate of Analysis guarantees an Acid Value <= 0.05 to 0.10 mg KOH/g and Color <= 35 to 50 APHA, because off-spec acidic TBEP Tris(2-butoxyethyl) Phosphate neutralizes the ammonia buffer in zinc-crosslinked floor finishes and causes viscosity drift or emulsion gelation during 50 °C storage.
Buyers sourcing TBEP Tris(2-butoxyethyl) Phosphate for indoor floor finishes, low-VOC architectural paints, and paperboard overprint varnishes should check the residual free 2-butoxyethanol (butyl glycol) monomer level (< 0.10% w/w) and odor profile of TBEP Tris(2-butoxyethyl) Phosphate to ensure low application odor in enclosed schools, hospitals, and supermarkets.

For synthetic rubber (NBR, HNBR, CR) and PVC plastisol compounding, procurement teams should confirm that TBEP Tris(2-butoxyethyl) Phosphate has a Karl Fischer moisture content <= 0.15% w/w so that trace water does not cause micro-porosity or blisters during 160 to 190 °C vulcanization or plastisol fusion.
Manufacturers producing halogen-free flame-retardant elastomers, cables, or polyurethane coatings should verify that TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3, 0% chlorine, 7.78% phosphorus) is supplied in dedicated halogen-free packaging without cross-contamination from chlorinated phosphate esters like TCPP or TDCPP.
Finally, when purchasing TBEP Tris(2-butoxyethyl) Phosphate for regulated food-packaging adhesives (21 CFR 175.105), paper coatings (21 CFR 176.170), or medical rubber stoppers, ensure that the supplier provides full EU REACH registration documentation, batch-traceable GC purity (>= 99.0%), and technical regulatory declarations.

TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE SUPPLY FROM ATAMAN KİMYA

 Ataman Kimya supplies high-purity TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3, EC 201-122-9, assay >= 99.0% w/w, color <= 50 APHA, acid value <= 0.10 mg KOH/g, pour point -70 °C) directly from stock in 200 kg drums, 1,000 kg IBC totes, and bulk ISO tank containers for immediate domestic and international dispatch.
Every shipment of TBEP Tris(2-butoxyethyl) Phosphate from Ataman Kimya is accompanied by a batch-specific Certificate of Analysis (CoA) verifying GC ester purity, APHA color, acid value, Karl Fischer moisture, refractive index (1.434–1.438), and specific gravity (1.015–1.025 g/cm3), alongside an up-to-date Safety Data Sheet (SDS) compliant with EU CLP/REACH and Turkish KKDIK regulations.
For institutional floor-care formulators and waterborne coating manufacturers, Ataman Kimya provides specialized low-odor, low-acidity TBEP Tris(2-butoxyethyl) Phosphate together with complementary co-solvents and additives including Diethylene Glycol Monoethyl Ether (Carbitol), Dipropylene Glycol Methyl Ether (DPM), 2-Butoxyethanol, oxidized polyethylene wax emulsions, and fluorosurfactants.
For synthetic rubber (NBR, SBR 1502, CR) and PVC plastisol processors, Ataman Kimya offers TBEP Tris(2-butoxyethyl) Phosphate alongside primary plasticizers (DOTP, DINP, DOA, DOS, ESBO), flame retardants (TCPP, TEP, Antimony Trioxide, ATH), and vulcanization accelerators from a single integrated chemical logistics hub in Istanbul, Türkiye.
Ataman Kimya's technical sales team supports R&D laboratories and plant engineers with sample evaluation quantities of TBEP Tris(2-butoxyethyl) Phosphate, custom drum/IBC palletization, and reliable just-in-time supply chain management across Europe, the Middle East, North Africa, and Central Asia.

FREQUENTLY ASKED QUESTIONS ABOUT TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE

 What is the exact CAS number, molecular formula, and phosphorus content of TBEP Tris(2-butoxyethyl) Phosphate?
TBEP Tris(2-butoxyethyl) Phosphate has the CAS Registry Number 78-51-3, the EC/EINECS Number 201-122-9, the molecular formula C18H39O7P, a molecular weight of 398.47 g/mol, and a theoretical elemental phosphorus content of 7.78% w/w (commercial specification 7.8 +/- 0.5% w/w) with 0.0% halogen content.

 Why is TBEP Tris(2-butoxyethyl) Phosphate considered mandatory in institutional acrylic floor polishes?
In zinc-crosslinked styrene-acrylic floor polishes, TBEP Tris(2-butoxyethyl) Phosphate performs two irreplaceable roles simultaneously: during wet mop application, its amphiphilic butoxyethyl chains migrate to the air-water interface to lower surface tension and eliminate mop ridges and recoat ghosting; after drying, because its boiling point exceeds 215 °C at 4 mmHg, TBEP Tris(2-butoxyethyl) Phosphate stays permanently inside the high-Tg acrylic film to prevent brittle "powdering" under high-speed burnishers.

 What is the recommended dosage of TBEP Tris(2-butoxyethyl) Phosphate in a 20% solids floor finish?
In a standard 18% to 22% non-volatile solids acrylic floor finish, TBEP Tris(2-butoxyethyl) Phosphate is typically dosed at 1.2% to 1.8% w/w on the total wet formula (equivalent to ~6% to 10% w/w on dry polymer solids), pre-blended with 2.0% to 4.0% w/w of a volatile glycol ether coalescent such as Diethylene Glycol Monoethyl Ether (Carbitol) or Dipropylene Glycol Methyl Ether (DPM).

 How should TBEP Tris(2-butoxyethyl) Phosphate be added to water-based latex emulsions to prevent coagulum or grit?
Because TBEP Tris(2-butoxyethyl) Phosphate has limited solubility in pure water (~0.66 to 1.1 g/L at 25 °C) and strongly solvates acrylic latex particles, it should always be pre-mixed with the water-miscible glycol ether coalescents (Carbitol or DPM) and diluted with an equal weight of deionized water before being metered slowly subsurface into the agitated emulsion over 15 to 30 minutes.

 What is the pour point of TBEP Tris(2-butoxyethyl) Phosphate and how does it perform in low-temperature rubber compounds?
TBEP Tris(2-butoxyethyl) Phosphate has an ultra-low pour/freezing point of -70.0 °C (-94.0 °F) and a low dynamic viscosity of 11 to 15 mPa·s at 20 °C. When compounded at 10 to 25 phr into polar elastomers such as Acrylonitrile-Butadiene Rubber (NBR) or Polychloroprene (CR), TBEP Tris(2-butoxyethyl) Phosphate depresses the vulcanizate brittle point to -50 to -58 °C while contributing halogen-free phosphorus flame retardancy.

 How does TBEP Tris(2-butoxyethyl) Phosphate compare to silicone defoamers in waterborne paints, inks, and adhesives?
Whereas polydimethylsiloxane (PDMS) silicone defoamers frequently cause "fisheyes", craters, poor substrate wetting, and inter-coat delamination when slightly over-dosed, adding 0.3% to 1.0% w/w TBEP Tris(2-butoxyethyl) Phosphate breaks entrained micro-foam bubbles cleanly while actively improving substrate wetting, film coalescence, and recoat adhesion.

 Why is TBEP Tris(2-butoxyethyl) Phosphate detected or discussed in clinical blood-collection tube studies?
TBEP Tris(2-butoxyethyl) Phosphate has long been used as a specialized low-temperature plasticizer in synthetic rubber stoppers for evacuated blood-collection tubes (such as Vacutainer-type tubes); in clinical chemistry, trace TBEP leached if blood contacts the rubber stopper can displace certain basic drugs from alpha-1-acid glycoprotein carrier proteins, which is why modern analytical laboratories use TBEP Tris(2-butoxyethyl) Phosphate as an LC-MS/MS reference standard and tube manufacturers tightly control stopper formulation and barrier coatings.

 Is TBEP Tris(2-butoxyethyl) Phosphate biodegradable and does it bioaccumulate in fish?
Yes, unlike chlorinated organophosphate flame retardants (such as TCEP or TCPP), TBEP Tris(2-butoxyethyl) Phosphate achieves > 80% biodegradation in 28-day OECD 301B aerobic tests and exhibits a very low Bioconcentration Factor (BCF <= 5.8 in carp per OECD 305C), meaning it does not bioaccumulate in aquatic organisms and is not classified as PBT or vPvB under EU REACH.

 Which container materials are compatible and incompatible with pure TBEP Tris(2-butoxyethyl) Phosphate?
Pure undiluted TBEP Tris(2-butoxyethyl) Phosphate is fully compatible with stainless steel (304/316L), carbon steel, baked phenolic-epoxy drum linings, high-density polyethylene (HDPE), polypropylene (PP), PTFE, and Viton/butyl seals, but it will soften, swell, and stress-crack unplasticized PVC, polystyrene (PS), ABS, polycarbonate (PC), and PMMA plastics.

 Is TBEP Tris(2-butoxyethyl) Phosphate classified as dangerous goods for road, sea, or air transport?
No, TBEP Tris(2-butoxyethyl) Phosphate (CAS 78-51-3) has a high flash point (224 °C open cup / 159 °C closed cup), low acute toxicity, and is not classified as dangerous goods or a marine pollutant under ADR, RID, IMDG, or IATA transport regulations.

TBEP TRIS(2-BUTOXYETHYL) PHOSPHATE – TECHNICAL SUMMARY

TBEP Tris(2-butoxyethyl) Phosphate (Tris(2-butoxyethyl) phosphate, Tributoxyethyl phosphate, KP-140, Amgard TBEP, CAS 78-51-3, EC 201-122-9, C18H39O7P, MW 398.47 g/mol) is the global benchmark non-halogenated trialkyl(alkoxy) phosphate ester combining permanent polymer plasticization, surface-active Marangoni leveling, MFFT coalescence reduction, plastisol viscosity depression, non-silicone micro-foam release, and 7.78% w/w phosphorus flame retardancy. Characterized by its water-white clarity (<= 50 APHA), low dynamic viscosity (11 to 15 mPa·s at 20 °C), ultra-low pour point (-70.0 °C), negligible room-temperature volatility (boiling range 215 to 228 °C at 4 mmHg), and low residual acidity (<= 0.10 mg KOH/g), TBEP Tris(2-butoxyethyl) Phosphate is indispensable across high-gloss zinc-crosslinked acrylic floor polishes, -55 °C cold-resistant NBR/CR synthetic rubbers, low-viscosity PVC plastisols, nitrocellulose lacquers, and crater-free waterborne coatings, printing inks, and adhesives. For technical specifications, sample requests, or bulk drum/IBC/ISO-tank quotations for TBEP Tris(2-butoxyethyl) Phosphate, contact Ataman Kimya:

Ataman Chemicals
Phone: +90 216 577 10 10
Email: info@atamankimya.com