SUPRAGIL MNS/88-E

Characterized by a high active sulfonate condensate content of approximately 85 percent to 90 percent by weight (nominal 88 percent active solids), a neutral-to-weakly-alkaline pH of 7.5 to 10.0 in aqueous solution, ultra-low free formaldehyde content, and exceptional thermal stability during fluid-bed, spray, and extrusion drying, Supragil MNS/88-E outperforms lignosulfonates and monomeric surfactants in concentrated, fast-dispersing solid and liquid agrochemical systems. Furthermore, Supragil MNS/88-E exhibits very low air-entrainment and foaming tendency during wet bead milling and high-speed spray-tank agitation, and is fully compatible with anionic wetting agents (such as sodium diisopropyl or dibutyl naphthalene sulfonates), nonionic block copolymers, and polycarboxylate co-dispersants.

Beyond crop-protection herbicides, fungicides, and insecticides, Supragil MNS/88-E serves as a workhorse dispersing and grinding aid in disperse and vat textile dyes, leather tanning syntans, aqueous carbon black and organic pigment pastes, emulsion polymerization latex stabilization, and gypsum or ceramic slurries. Available from Ataman Kimya in moisture-resistant 20 kg and 25 kg multi-wall polyethylene-lined bags and palletized bulk shipments, Supragil MNS/88-E provides formulators with consistent suspensibility, spontaneous bloom dispersion, and long-term storage stability.

CAS Number: 81065-51-2 (Naphthalenesulfonic acid, methyl-, polymer with formaldehyde, sodium salt) / 9084-06-4 (Naphthalenesulfonic acid, polymer with formaldehyde, sodium salt) / 68425-94-5 (Sulfonated aromatic methylnaphthalene-formaldehyde condensate sodium salt; Monomeric Reference CAS: 26264-58-4)
EC Number: Polymer (Exempt from EINECS monomer listing under REACH Article 2(9); Monomer/Precursor EC Numbers: 617-194-3 / 614-476-8 / 247-564-8)
Molecular Formula: (C11H9NaO3S . CH2)n or C11H9NaO3S-(CH2-C11H7NaO3S)n-CH2-C11H9NaO3S (Methylene-bridged sodium methylnaphthalene sulfonate oligomer/polymer where average degree of polymerization n = 2 to 10)
Molecular Weight: Weight-Average Molecular Weight (Mw) approximately 1,200 to 6,000 g/mol (Typically 1,800 to 3,500 g/mol oligomeric polycondensate; Repeating Methylnaphthalene Sulfonate Sodium Salt Unit Molar Mass = 256.25 g/mol)
INCI Name: SODIUM POLYNAPHTHALENESULFONATE (or SODIUM METHYLNAPHTHALENESULFONATE)
E Number: Not Applicable (Agrochemical inert ingredient and industrial anionic dispersant; approved for agricultural crop-protection formulations under US EPA 40 CFR 180.910 / 180.920 / 180.930 and EU REACH Polymer Regulations)
Melting Point: > 250.0 °C to 300.0 °C (> 482.0 °F to 572.0 °F) with gradual thermal charring and decomposition before melting (Thermally stable solid salt at all agrochemical extrusion, fluid-bed drying, and spray-drying temperatures up to 200 °C)
Boiling Point: Not Applicable (Non-volatile ionic polymeric organic salt; decomposes above 280.0 °C to 320.0 °C without boiling)
Viscosity: Not Applicable as a free-flowing dry powder / micro-granule at 20 °C; in a 30% to 40% w/w aqueous solution at 25 °C, dynamic viscosity is approximately 15 to 60 mPa.s (cP), imparting strong viscosity-reducing fluidity to high-solids pesticide and pigment slurries
Density: True particle density of approximately 1.35 to 1.50 g/cm3 at 20 °C; apparent loose bulk density of 450 to 680 kg/m3 (0.45 to 0.68 g/cm3) for dry powder / micro-granular grade; 40% w/w aqueous solution density is ~1.18 to 1.22 g/cm3 at 20 °C

Most Frequently Encountered Synonyms:
Supragil MNS/88-E
SUPRAGIL MNS/88-E
Supragil MNS 88-E
Supragil MNS 88
Supragil MNS/S8-E
Supragil MNS/90 Equivalent Grade
Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate (88% Active)
Methylnaphthalene Sulfonic Acid Formaldehyde Polymer Sodium Salt
Sodium Alkylnaphthalene Sulfonate Formaldehyde Condensate
Condensate of Sodium Methylnaphthalene Sulfonate with Formaldehyde
Sodium Polynaphthalene Methane Sulfonate (Methylated Grade)
Methylated Naphthalene Sulfonate Condensate Sodium Salt
CAS 81065-51-2
CAS 9084-06-4
CAS 68425-94-5

PRODUCT OVERVIEW, NOMENCLATURE DECODING AND POLYAROMATIC CHEMICAL ARCHITECTURE

Supragil MNS/88-E—registered internationally under CAS Number 81065-51-2 (Naphthalenesulfonic acid, methyl-, polymer with formaldehyde, sodium salt), alongside broader class CAS Numbers 9084-06-4 and 68425-94-5—is a specialty anionic polymeric dispersing agent belonging to the alkylnaphthalene sulfonate formaldehyde condensate (ANSFC / MNSFC) chemical family. Widely recognized across global crop-protection (agrochemical) formulation, dye and pigment milling, latex stabilization, and industrial suspension engineering under its trade and chemical synonyms Supragil MNS 88-E, Supragil MNS 88, Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate, Methylated Polynaphthalene Sulfonate Sodium Salt, Morwet D-425 / Tersperse 2020 functional equivalent, and in Turkish chemical trade as Sodyum Metilnaftalin Sülfonat Formaldehit Kondensatı or Anyonik Zirai İlaç Dispersantı, this buff-to-light-brown free-flowing powder/micro-granule is supplied by Ataman Kimya for high-performance solid and liquid dispersion systems.

 Decoding the "Supragil MNS/88-E" Designation:
Within the globally established Supragil nomenclature (originally developed by Rhodia / Solvay / Syensqo for agrochemical and industrial surfactant systems):
- "Supragil" designates the flagship product line of high-efficiency naphthalene sulfonate wetting and dispersing agents engineered for agricultural pesticide formulations (WP, WG/WDG, SC, SE, FS) and industrial dispersions.
- "MNS" stands for Methyl Naphthalene Sulfonate condensate (sodium salt)—specifically distinguishing a methylene-bridged polymeric dispersing agent synthesized from methylated naphthalene feedstocks (alpha- and beta-methylnaphthalenes, C11H10) rather than unsubstituted naphthalene (NNS) or non-condensed monomeric wetting agents like Supragil WP (sodium diisopropylnaphthalene sulfonate).
- "88" indicates the nominal high active sodium methylnaphthalene sulfonate condensate content (~88 percent w/w active organic sulfonate polymer, with reduced inorganic sodium sulfate electrolyte <= 8 percent to 10 percent w/w and moisture <= 4 percent to 5 percent w/w).
- "-E" denotes the optimized Easy-Dispersing / Extruded / Low-Dust European compliance grade, engineered with controlled particle granulometry, reduced dusting during hopper charging, rapid cold-water dissolution, and ultra-low residual free formaldehyde (< 0.05 percent to 0.10 percent w/w) to avoid GHS carcinogen/sensitizer classification.

 Molecular Structure and Why Methylnaphthalene Condensates Outperform Unsubstituted Naphthalene Condensates:
At the molecular level, Supragil MNS/88-E consists of oligomeric chains of 2 to 10 methyl-substituted bicyclic naphthalene aromatic rings linked predominantly at the 4-, 6-, or 7-positions via flexible methylene bridges (-CH2-), with each aromatic ring carrying a strongly hydrophilic sodium sulfonate group (-SO3- Na+) and a hydrophobic methyl group (-CH3):
- Enhanced Hydrophobic Anchor via the Methyl Substituent (-CH3): Compared with standard unsubstituted sodium polynaphthalene sulfonate (SNF / PNS, CAS 9084-06-4, used mainly as a bulk concrete superplasticizer), the presence of the lipophilic methyl group (-CH3) on each naphthalene nucleus in Supragil MNS/88-E significantly increases the hydrophobicity and molar volume of the aromatic backbone. This methylated polyaromatic platform exhibits a much stronger adsorption isotherm onto low-polarity, hydrophobic organic crystals—such as triazole, strobilurin, phenylurea, neonicotinoid, and dinitroaniline agrochemical active ingredients (AIs), as well as organic phthalocyanine/azo pigments and carbon black—preventing surfactant desorption during high-temperature storage (54 °C CIPAC MT 46.3 accelerated aging).
- Dual Electrosteric Stabilization Mechanism: Once adsorbed flat onto the solid particle surface via pi-pi electron donor-acceptor interactions and hydrophobic bonding, the ionized sulfonate groups (-SO3-) project outward into the surrounding water phase. Because the sulfonate group is the salt of a strong sulfonic acid (pKa < 1.0), it remains 100 percent dissociated across the entire pH range from pH 1.0 to 14.0! This creates a dense, permanent negative electrical double layer (zeta potential typically -45 mV to -65 mV) combined with oligomeric steric hindrance that repels approaching particles, slashes slurry yield stress, and prevents crystal growth (Ostwald ripening).

 Critical Distinction Between Dispersing Agent "Supragil MNS/88-E" and Wetting Agent "Supragil WP":
Formulators must clearly distinguish between the two complementary classes of naphthalene sulfonates used together in WP and WDG recipes:
- Monomeric Alkylnaphthalene Sulfonates (such as Supragil WP / Morwet EFW / Nekal BX, CAS 1322-93-6 / 25417-20-3, MW ~315 to 345 g/mol, NOT condensed with formaldehyde): These are low-molecular-weight monomeric surfactants that strongly lower dynamic surface tension (to ~32–36 mN/m), acting as rapid Wetting Agents so dry powder sinks into water in seconds—but they generate moderate foam and cannot prevent long-term crystal settling on their own.
- Polymeric Methylnaphthalene Sulfonate Formaldehyde Condensates (Supragil MNS/88-E, CAS 81065-51-2, MW ~1,800 to 3,500 g/mol, condensed with formaldehyde): Because methylene-bridge polycondensation links 5 to 9 monomer units into a multi-anchoring comb oligomer, Supragil MNS/88-E causes minimal surface-tension depression (~58 to 66 mN/m at 1% w/w) and therefore generates almost ZERO foam, while acting as a powerhouse Dispersing Agent, Milling Aid, and Suspensibility Stabilizer! In practice, combining 3 percent to 8 percent w/w Supragil MNS/88-E (dispersant) with 1 percent to 3 percent w/w of a monomeric alkylnaphthalene sulfonate (wetting agent) forms the gold-standard synergistic surfactant package for WP and WG formulations.

PHYSICAL AND CHEMICAL PROPERTIES AND QUANTITATIVE SPECIFICATIONS

Every commercial lot of Supragil MNS/88-E (CAS 81065-51-2 / 9084-06-4) supplied by Ataman Kimya is manufactured under strict ISO 9001 quality management systems and verified against international CIPAC, ASTM, and ISO analytical test methods:

 Chemical Composition and Purity Specifications:
- Active Matter Content (Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate, Dry Basis): >= 85.0 percent to 90.0 percent w/w (nominal specification: 88.0 percent +/- 2.0 percent w/w).
- Ionic Character: Anionic (Strong polyelectrolyte sulfonate salt, -SO3- Na+).
- Inorganic Salt Content — Sodium Sulfate (Na2SO4, by Ion Chromatography or Barium Gravimetry): <= 7.0 percent to 10.0 percent w/w (typical batch value: 5.0 percent to 8.0 percent w/w).
- Moisture / Water Content (Karl Fischer Titration ISO 4317 or Loss on Drying at 105 °C): <= 5.0 percent w/w (typical batch value: 2.0 percent to 4.0 percent w/w).
- Water-Insoluble Matter (10% w/w Aqueous Solution Filtered through 45-Micron Mesh): <= 0.10 percent to 0.20 percent w/w (typical: < 0.05 percent w/w, guaranteeing zero spray-nozzle clogging in agricultural sprayers).
- Residual Free Formaldehyde Content (HPLC / Acetylacetone Spectrophotometry): <= 0.05 percent to 0.10 percent w/w (< 500 to 1,000 ppm, typical < 200 to 400 ppm, below the 0.1% w/w GHS CLP classification threshold).
- Chloride Content (as NaCl): <= 0.20 percent w/w.

 Physical, Optical, Surface-Chemical, and Solution Constants:
- Visual Appearance at 20 °C: Free-flowing light tan, buff, or yellowish-brown fine powder or low-dust micro-granules with a faint characteristic aromatic odor.
- pH of Aqueous Solution (1% to 10% w/w in Distilled Water at 25 °C, ISO 4316): 7.5 to 10.0 (typically 8.0 to 9.5 at 5% w/w solution).
- Apparent Loose Bulk Density (ISO 697): 450 to 680 kg/m3 (0.45 to 0.68 g/cm3, typically 520 to 620 g/L).
- Particle Size Sieve Analysis: >= 98.0 percent passing 300-micron (50 mesh) screen (with micro-granular "-E" morphology minimizing respirable fines < 10 microns).
- Water Solubility at 20 °C to 25 °C: >= 400 to 500 g/L (40% to 50% w/w), dissolving rapidly in cold and warm water to form a clear amber-brown solution without gel phase formation.
- Surface Tension (1.0% w/w Aqueous Solution at 25 °C, Du Noüy Ring Method ISO 304): 56.0 to 66.0 mN/m (dynes/cm; compared to pure water at 72.0 mN/m—confirming that Supragil MNS/88-E adsorbs selectively at the solid-liquid interface rather than the air-water interface).
- Ross-Miles Foam Height (ASTM D1173 / CIPAC MT 47.2, 0.1% to 1.0% w/w at 25 °C in 342 ppm CIPAC Standard Water D): Initial foam height <= 10 to 25 mm; foam height after 1 minute <= 0 to 5 mm (virtually non-foaming).
- Hard-Water and Electrolyte Tolerance (CIPAC MT 41): Completely stable against precipitation in CIPAC Standard Waters A (20 ppm), D (342 ppm CaCO3), and C (500 ppm) up to > 1,000 ppm Ca2+/Mg2+ hardness, and stable across pH 1.0 to 14.0.
- Thermal Decomposition / Drying Stability (TGA): Thermally stable with zero loss of dispersing efficiency up to 220 °C to 250 °C; Decomposition Onset > 280 °C; Ash Content (Sulfated Ash at 750 °C): ~28 percent to 34 percent w/w (corresponding to sodium sulfate from mineralized -SO3Na groups).
- Cloud Point: None up to 100 °C (unlike ethoxylated nonionic surfactants that cloud out and lose stabilization at 45 °C to 70 °C, ionic Supragil MNS/88-E exhibits no cloud point even in boiling water!).

INDUSTRIAL MANUFACTURING PROCESS: METHYLNAPHTHALENE SULFONATION, FORMALDEHYDE CONDENSATION AND DRYING

The industrial production of Supragil MNS/88-E (CAS 81065-51-2) involves four tightly controlled chemical engineering unit operations designed to achieve optimal oligomeric chain length (n = 4 to 8), maximum beta-sulfonation selectivity, and ultra-low residual formaldehyde:

Step 1 - Regioselective Sulfonation of Methylnaphthalene:
Refined methylnaphthalene feedstock (consisting of 1-methylnaphthalene and 2-methylnaphthalene isomers) is charged into a jacketed glass-lined or high-alloy reactor and reacted with concentrated sulfuric acid (98% H2SO4) or 20% oleum at a controlled elevated temperature of 135 °C to 160 °C for 2 to 4 hours. Conducting sulfonation at 140 °C to 160 °C promotes thermodynamic control, placing the sulfonic acid group (-SO3H) predominantly on the unhindered beta-positions (such as 6-methylnaphthalene-2-sulfonic acid and 7-methylnaphthalene-2-sulfonic acid) rather than the sterically crowded alpha-positions, which maximizes linear methylene-bridge reactivity in Step 2.

Step 2 - Acid-Catalyzed Formaldehyde Polycondensation (Methylene Bridging):
After cooling the sulfonated reaction mass to 85 °C to 105 °C and diluting slightly with water, aqueous formaldehyde (37% HCHO, dosed at a precise molar ratio of ~0.80 to 0.92 moles HCHO per mole of methylnaphthalene sulfonic acid) is metered slowly into the reactor over 2 to 3 hours, followed by a pressurized condensation hold at 105 °C to 125 °C for 4 to 8 hours. During this electrophilic aromatic substitution step, protonated formaldehyde (-CH2OH+) links adjacent methylnaphthalene sulfonic acid rings via stable covalent methylene bridges (-CH2-), building linear oligomers with a weight-average molecular weight (Mw) of 1,800 to 3,500 g/mol. A final vacuum/steam stripping stage or thermal scavenger polish reduces unreacted free formaldehyde below 0.05 percent w/w.

Step 3 - Alkaline Neutralization and Sulfate Salt Reduction:
The acidic polycondensate is cooled and neutralized to pH 8.0 to 9.5 using aqueous sodium hydroxide (NaOH) or a dual lime-caustic neutralization sequence (where excess free sulfuric acid is precipitated as insoluble calcium sulfate gypsum CaSO4.2H2O and filtered off on rotary vacuum filters), yielding an aqueous solution of Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate with low residual sodium sulfate (<= 7 percent to 10 percent on dry basis).

Step 4 - Spray Drying or Fluid-Bed Agglomeration into "-E" Low-Dust Grade:
Finally, the concentrated 42 percent to 48 percent aqueous liquor is atomized in a tall co-current spray-drying tower with integrated fluid-bed agglomeration (inlet air 180 °C to 220 °C, outlet air 85 °C to 95 °C) to produce uniform, free-flowing, low-dust buff-colored Supragil MNS/88-E micro-granules/powder with moisture below 4.0 percent w/w.

COMPREHENSIVE AGROCHEMICAL AND INDUSTRIAL APPLICATIONS AND FORMULATION ENGINEERING

Thanks to its strong aromatic adsorption, high negative zeta potential, hard-water tolerance, and zero cloud point, Supragil MNS/88-E supplied by Ataman Kimya is utilized across seven major industrial sectors:

 Water Dispersible Granules (WG / WDG — Extruded, Fluid-Bed, and Spray-Dried Agrochemicals):
Water Dispersible Granules represent the fastest-growing solid pesticide formulation format (replacing dusty WP and solvent-heavy EC formulations), and Supragil MNS/88-E is one of the world's premier WG dispersants and disintegrating binders:
- Dosage & Function (4.0% to 12.0% w/w): Compounded at 4.0 percent to 12.0 percent w/w (often up to 15.0 percent w/w in 70%–80% high-load AI granules such as Mancozeb 75% WG, Sulfur 80% WG, Atrazine 90% WG, Imidacloprid 70% WG, Tebuconazole 80% WG, Copper Oxychloride WG, or Diuron 80% WG) alongside 1.5 percent to 3.0 percent w/w of a monomeric alkylnaphthalene sulfonate wetting agent (like Supragil WP / Morwet EFW) and soluble fillers (ammonium sulfate, lactose, kaolin, or corn starch).
- Spontaneous Granule Disintegration ("Bloom") and CIPAC MT 184 Suspensibility: When WDG granules are poured into a farmer's field spray tank, Supragil MNS/88-E dissolves rapidly at the granule-water boundary, generating instantaneous electrostatic repulsion between micronized pesticide crystals (d50 = 2 to 5 microns) so the granules disintegrate within 10 to 30 seconds (<= 5 to 10 cylinder inversions) and achieve CIPAC MT 184 suspensibility values >= 85 percent to 98 percent in 342 ppm hard water both initially and after 14 days at 54 °C!
- High-Temperature Extrusion & Spray-Drying Stability: Unlike ethoxylated nonionic surfactants (which melt at 40 °C–55 °C, making dough sticky on basket/twin-screw extruders and causing granule caking during storage), Supragil MNS/88-E has a decomposition point > 250 °C, acting as a crisp, non-tacky dry binder during paste extrusion and fluid-bed drying at 70 °C to 130 °C.

 Wettable Powders (WP — Fungicides, Herbicides, and Insecticides):
- Dosage & Function (3.0% to 8.0% w/w): Air-jet milled (micronized) together with the solid technical active ingredient (such as Carbendazim, Chlorothalonil, Cymoxanil, Metalaxyl, Thiophanate-methyl, Captan, or Pyrethroids), silica/kaolin carrier, and 1.5 percent to 3.0 percent w/w wetting agent. Supragil MNS/88-E coats freshly fractured pesticide crystal faces during air-jet milling, preventing post-milling crystal reagglomeration and maintaining < 45-micron wet-sieve residue below 0.05 percent.

 Aqueous Suspension Concentrates (SC / Flowables) and Suspo-Emulsions (SE):
- Dosage & Function (1.5% to 5.0% w/w): In liquid Suspension Concentrates (500 g/L SC formulations), Supragil MNS/88-E is dissolved in the aqueous grinding phase prior to horizontal bead milling (to d50 = 1.5 to 3.0 microns). Because Supragil MNS/88-E produces near-zero foam during high-energy zirconia bead milling and has no thermal cloud point, it prevents mill overheating, slashes slurry viscosity (allowing 50% to 60% w/w AI loading), and works synergistically with EO/PO block copolymers (such as Pluronic / Synperonic PE or Atlox 4913 acrylic graft copolymers) to prevent claying and syneresis over 2 years of shelf life.

 Disperse Dyes, Vat Dyes, and Organic Pigment Milling & Standardization:
In textile dyestuff and organic pigment manufacturing, Supragil MNS/88-E (used at 15 percent to 50 percent on dry dye/pigment weight) serves as a primary wet-milling dispersant and spray-drying standardization agent for hydrophobic Disperse Dyes (for polyester dyeing at 130 °C), Vat Dyes, Sulfur Dyes, Phthalocyanine Blues/Greens, Azo pigments, and Carbon Black pastes. Its high thermal stability (> 200 °C) and lack of a cloud point prevent dye specking or tar formation during high-temperature jet dyeing at 130 °C to 140 °C, while its low azo-reduction tendency preserves bright dye shades compared to high-sugar lignosulfonates.

 Emulsion Polymerization, Synthetic Latex Stabilization, and Rubber Compounding:
Used at 0.5 percent to 2.5 percent w/w as a secondary anionic stabilizer in styrene-butadiene (SBR), chloroprene (neoprene), and nitrile (NBR) emulsion polymerization latices to prevent mechanical shear coagulation during pumping and compounding, and to prepare pre-dispersed aqueous slurries of sulfur, zinc oxide, and vulcanization accelerators (ZDEC, ZDBC, TMTD) for dipped latex gloves.

. Leather Tanning (Auxiliary Syntan), Gypsum Wallboard, Ceramic Slurries, and Oilfield Cementing:
- Leather Processing: Used at 1.0 percent to 3.0 percent on pelt weight as a neutralizing and dispersing auxiliary syntan that promotes uniform penetration of vegetable tannins, chrome tanning salts, and anionic acid/direct dyes into leather cross-sections.
- Ceramic, Gypsum, and Coal-Water Slurries: Dosed at 0.2 percent to 1.0 percent w/w to deflate clay platelets and gypsum crystals, reducing water demand by 15 percent to 25 percent while cutting kiln/dryer energy consumption.

 Practical Guide Agrochemical Formulation Frameworks Featuring Supragil MNS/88-E:
- Guide Formulation 1 (Tebuconazole 80% WG / Imidacloprid 70% WG Extruded Water Dispersible Granule): Technical Active Ingredient (Air-Jet Micronized d90 < 8 microns) 80.0 percent w/w (or 70.0 percent w/w), Supragil MNS/88-E (Primary Anionic Polymeric Dispersant) 7.0 percent w/w, Sodium Diisopropylnaphthalene Sulfonate (Supragil WP Wetting Agent) 2.0 percent w/w, Sodium Polycarboxylate Co-Dispersant (Sokalan CP 5 / Geropon TA/72) 2.0 percent w/w, Ammonium Sulfate (Water-Soluble Disintegrating Salt) 4.0 percent w/w, and Kaolin Clay / Corn Starch Carrier Balance to 100.0 percent w/w (kneaded with 14%–18% water, extruded through a 0.8 mm basket dome screen, and dried at 65 °C to < 1.5% moisture).
- Guide Formulation 2 (Mancozeb 80% WP / Chlorothalonil 75% WP Wettable Powder): Technical Active Ingredient 80.0 percent w/w, Supragil MNS/88-E (Dispersing & Suspensibility Agent) 5.0 percent w/w, Alkylnaphthalene Sulfonate Sodium Salt (Wetting Agent) 2.5 percent w/w, Precipitated Hydrated Silica (Flow Aid & Grinding Carrier) 3.0 percent w/w, and Kaolin Clay Balance to 100.0 percent w/w (air-jet milled to d90 < 12 microns).
- Guide Formulation 3 (broad-Spectrum 500 g/L SC Aqueous Suspension Concentrate): Technical Active Ingredient (Melting Point > 90 °C) 43.5 percent w/w (500 g/L), Supragil MNS/88-E (Electrostatic Dispersing Agent & Mill-Base Viscosity Reducer) 2.5 percent w/w, EO-PO Block Copolymer or Acrylic Comb Co-Dispersant (Steric Stabilizer) 2.0 percent w/w, Propylene Glycol (Antifreeze) 5.0 percent w/w, Silicone Antifoam Emulsion 0.3 percent w/w, Xanthan Gum + Bentonite Clay (Rheology Modifier added post-milling) 0.35 percent w/w, Biocide 0.15 percent w/w, and Deionized Water Balance to 100.0 percent w/w.

TECHNICAL COMPARISON OF SUPRAGIL MNS/88-E WITH LIGNOSULFONATES AND POLYCARBOXYLATES

Selecting the optimal agrochemical or pigment dispersant requires comparing Supragil MNS/88-E against competing anionic polymeric dispersants across purity, color, foaming, and high-temperature stability:

 Supragil MNS/88-E vs. Sodium / Calcium Lignosulfonates (CAS 8061-51-6 / 8061-52-7):
Lignosulfonates are wood-pulping byproducts containing 10 percent to 25 percent reducing wood sugars, variable molecular weights, and dark brown-black color. In agrochemical WDG/WP and dye formulations, lignosulfonates suffer from batch-to-batch variability, dark staining, moderate foaming, sticky caramelization during high-temperature spray drying, and chemical reduction of azo dyes or sensitive pesticides. By contrast, synthetic Supragil MNS/88-E contains zero wood sugars, exhibits light buff color, generates near-zero foam, resists caramelization up to 250 °C, and delivers 2 to 3 times higher dispersing power per gram on hydrophobic organic crystals!

 Supragil MNS/88-E vs. Unsubstituted Sodium Polynaphthalene Sulfonates (SNF / PNS, CAS 9084-06-4):
Standard concrete-grade SNF lacks methyl groups on the naphthalene ring and often contains 15 percent to 20 percent sodium sulfate salt. Supragil MNS/88-E's methylated aromatic rings (-CH3) provide significantly stronger lipophilic adsorption onto hydrophobic organic pesticides and pigments, superior resistance to desorption during 54 °C CIPAC storage, and higher active content (~88%).

. Supragil MNS/88-E vs. Polycarboxylate Comb/Linear Dispersants (such as Sokalan CP 5 / Geropon T/36):
Linear sodium polycarboxylates carry high charge density and excel at chelating hard-water cations and binding WDG granules, but their aliphatic acrylate-maleate backbones adsorb weakly onto highly aromatic hydrophobic crystals. In practice, blending Supragil MNS/88-E (4% to 7% w/w for strong pi-pi aromatic crystal anchoring) with a Polycarboxylate (1.5% to 3% w/w for osmotic granule disintegration and Ca2+ sequestration) creates an unbeatable synergistic dual-dispersant system for WDG formulations.

PACKAGING, STORAGE AND HANDLING GUIDELINES

To preserve the free-flowing powder/micro-granular morphology, low moisture content (<= 4.0 percent to 5.0 percent w/w), and rapid water dispersibility of Supragil MNS/88-E (CAS 81065-51-2), warehouse managers and plant operators should observe the storage and handling protocols established by Ataman Kimya:
Commercial Packaging Configurations Supplied by Ataman Kimya:

- 20 kg and 25 kg Net Multi-Wall Bags with Polyethylene Inner Liner: Heavy-duty multi-ply kraft paper or woven polypropylene bags fitted with a sealed moisture-barrier low-density polyethylene (LDPE) inner bag (standard palletization: 30 to 40 bags = 600 kg to 1,000 kg net on shrink-wrapped ISPM-15 fumigated wooden pallets).
- 500 kg to 1,000 kg Net Lined Flexible Intermediate Bulk Containers (FIBCs / Big Bags): Available with polyethylene moisture liners and bottom discharge spouts for high-volume WDG, WP, and dyestuff plants.

Storage Conditions, Hygroscopic Caking Prevention, and Shelf Life:
 Dry, Cool, Well-Ventilated Warehouse Storage (+5 °C to +35 °C / 41 °F to 95 °F): Because all spray-dried sodium sulfonate salts are moderately hygroscopic when exposed to humid air (> 65 percent relative humidity), leaving opened bags of Supragil MNS/88-E exposed to damp warehouse air will cause moisture absorption and surface crusting or caking. Always store Supragil MNS/88-E in its tightly sealed original packaging in a dry, covered indoor warehouse away from rain, steam pipes, and floor moisture.
 Re-Sealing Partial Bags & Pallet Stacking: Immediately twist and tie the inner polyethylene liner bag after partial dispensing. Note that even if minor pressure lumping occurs after prolonged storage, the lumps crush easily and the chemical dispersing performance in water remains 100 percent unaffected. Do not stack pallets more than two high to prevent bottom-bag compaction.
 Certified Shelf Life: When stored unopened in original moisture-lined bags under dry warehouse conditions (< 35 °C), Supragil MNS/88-E has a certified shelf life of 24 to 36 months (2 to 3 years) from the date of manufacture.

FIRST AID MEASURES, TOXICOLOGY AND SAFETY INFORMATION

Supragil MNS/88-E (Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate, CAS 81065-51-2 / 9084-06-4) is a non-volatile, high-molecular-weight anionic polymer with low acute toxicity. Because the "-E" grade is engineered with low dust and ultra-low free formaldehyde (< 0.05% to 0.1%), it is free from CMR (carcinogen/mutagen/reproductive toxicant) classifications; under GHS / EU CLP Regulation (EC) No 1272/2008, concentrated dry naphthalene sulfonate condensate powders may cause mild-to-moderate eye irritation (Eye Irrit. 2, H319) or mechanical respiratory dust irritation upon direct contact.

Quantitative Toxicological and Ecotoxicological Profile:
- Acute Oral Toxicity (OECD Test Guideline 401): LD50 (Rat, oral) > 2,000 to 5,000 mg/kg body weight (typically reported between 3,800 and > 5,000 mg/kg bw, demonstrating low acute oral toxicity).
- Acute Dermal Toxicity (OECD Test Guideline 402): LD50 (Rabbit/Rat, dermal) > 2,000 mg/kg body weight.
- Skin Irritation & Sensitization (OECD 404 / 406): Non-irritating or mildly irritating upon prolonged dry powder contact; non-sensitizing in guinea pig maximization tests (OECD 406).
- Eye Irritation (OECD Test Guideline 405): Dry powder contact with the eyes can cause moderate conjunctival redness and watering (reversible with prompt water flushing).
- Aquatic Ecotoxicity: LC50 (Fish, 96 h) > 100 mg/L; EC50 (Daphnia magna, 48 h) > 100 mg/L; not classified as an acute or chronic marine pollutant.

First Aid Measures for Industrial and Formulation Plant Personnel:
- Eye Contact: Immediately flush eyes with plenty of lukewarm low-pressure running water or sterile eyewash saline for at least 15 minutes while holding upper and lower eyelids open. Remove contact lenses if present and easy to do. Seek medical attention if eye irritation or redness persists.
- Skin Contact: Brush off dry powder and wash affected skin thoroughly with soap and plenty of water. Remove contaminated work clothing and launder before reuse.
- Inhalation: Although the "-E" grade is low-dusting, if airborne dust is inhaled during hopper charging or air-jet milling, move the person to fresh air, blow nose gently, and rinse mouth and throat with water. Seek medical advice if coughing or throat irritation persists.
- Ingestion: Rinse mouth thoroughly with water and give 1 to 2 glasses of water to drink if the person is fully conscious. Do not induce vomiting unless directed by medical personnel. Seek medical attention if discomfort occurs.

Personal Protective Equipment (PPE), Fire-Fighting, and Spill Cleanup:
- Workplace PPE: Wear tightly fitting safety goggles (EN 166), impervious nitrile or butyl rubber gloves (EN 374), long-sleeved protective workwear, and a P2 / N95 particulate dust respirator (EN 149) when charging dry powder hoppers or operating air-jet mills.
- Fire-Fighting Measures: Supragil MNS/88-E is not flammable at room temperature, though like all organic powders, high concentrations of finely dispersed airborne dust in enclosed silos (> 60 g/m3) can present a dust deflagration hazard if exposed to an ignition source (ground all pneumatic transfer lines and baghouses!). Extinguish fires using water spray/fog, foam, dry chemical powder (ABC), or CO2. Thermal decomposition in a fire produces carbon oxides (CO, CO2) and sulfur oxides (SOx); firefighters must wear self-contained breathing apparatus (SCBA).
- Spill Cleanup: Avoid dry sweeping with brooms that raise dust clouds; vacuum spilled Supragil MNS/88-E using an industrial HEPA-filtered vacuum cleaner or shovel gently into dry, labeled containers, then flush the residual floor surface with water (note that wet solutions on smooth floors can be slippery).

REGULATORY STATUS, AGROCHEMICAL INERT APPROVALS AND INTERNATIONAL CLASSIFICATIONS

Supragil MNS/88-E (CAS 81065-51-2 / 9084-06-4 / 68425-94-5) holds comprehensive regulatory approvals for agricultural crop-protection formulations and industrial applications worldwide:

 United States EPA Inert Ingredient Clearances (Title 40 CFR Part 180):
Approved by the U.S. Environmental Protection Agency (US EPA) as an authorized Inert Ingredient (Dispersant / Surfactant) in pesticide formulations applied to growing crops and raw agricultural commodities after harvest under 40 CFR 180.910 (Inert ingredients used pre- and post-harvest, exempted from the requirement of a tolerance), 40 CFR 180.920 (Pre-harvest use), and 40 CFR 180.930 (Animal applications) under the alkylnaphthalene sulfonic acid formaldehyde condensate sodium salt family.

 European Union REACH and Plant Protection Regulation (EC) No 1107/2009:
- EU REACH Regulation (EC) No 1907/2006: As a polymer meeting the 2% rule and OECD polymer definition, Supragil MNS/88-E is exempt from mandatory polymer registration under REACH Article 2(9), while all precursor monomers are fully REACH-registered.
- EU Regulation (EC) No 1107/2009 Annex III Co-Formulant Compliance: Because Supragil MNS/88-E is manufactured with ultra-low residual free formaldehyde (< 0.05%–0.10% w/w) and contains zero nonylphenol ethoxylates (NPEO-free), it complies with EU Annex III unacceptable co-formulant restrictions for plant protection products sold across the European Union and Turkey.

 Global Chemical Inventories and Transport Classification:
- Global Chemical Inventories: Listed across US TSCA (Active, CAS 81065-51-2 / 9084-06-4 / 68425-94-5), Canada DSL, Australia AIIC, China IECSC, Japan ENCS (8-219 / 7-1228), South Korea KECI, Philippines PICCS, and New Zealand NZIoC.
- International Transport Classification (ADR / RID / IMDG / IATA): Not Regulated as Dangerous Goods for road, rail, sea, or air transport (UN Number: Not Regulated; Hazard Class: None; Packing Group: None; Marine Pollutant: No; Customs HS Code: 3402.39 / 3402.49 / 3824.40).

FREQUENTLY ASKED QUESTIONS (FAQ)

 What is Supragil MNS/88-E and what chemical structure gives it its dispersing power?
Supragil MNS/88-E (CAS 81065-51-2 / 9084-06-4) is an anionic polymeric dispersing agent chemically defined as the sodium salt of methylnaphthalene sulfonic acid condensed with formaldehyde (~88 percent active sulfonate polymer). Its structure consists of 2 to 10 methylated naphthalene aromatic rings linked by methylene bridges (-CH2-), with each ring bearing a strongly ionized sodium sulfonate group (-SO3Na). The hydrophobic methylnaphthalene rings anchor tightly onto hydrophobic pesticide crystals or pigment particles via pi-pi stacking, while the ionized sulfonate groups create a strong negative electrical charge (-45 to -65 mV zeta potential) that repels particles and prevents agglomeration.

 What do "MNS", "88", and "-E" stand for in the product name Supragil MNS/88-E?
In the Supragil nomenclature, "MNS" stands for Methyl Naphthalene Sulfonate formaldehyde condensate (sodium salt), "88" indicates the nominal high active polymer content of approximately 88 percent w/w (with low sodium sulfate salt <= 8%–10% and moisture <= 4%–5%), and "-E" designates the Easy-dispersing / Extruded low-dust grade with controlled particle size and ultra-low residual free formaldehyde (< 0.05%–0.10%), engineered for rapid cold-water dissolution and safe operator handling.

 What is the difference between a polymeric dispersant like Supragil MNS/88-E and a monomeric wetting agent like Supragil WP?
Monomeric alkylnaphthalene sulfonates (such as Supragil WP or Morwet EFW, MW ~320 g/mol, NOT condensed with formaldehyde) are small molecules that rapidly lower water surface tension to ~33 mN/m so dry powder wets and sinks immediately, but they generate foam and cannot prevent particle settling over time. By contrast, polymeric Supragil MNS/88-E (MW ~1,800 to 3,500 g/mol, condensed with formaldehyde) has multiple aromatic anchor groups per chain, barely lowers surface tension (~60 mN/m, producing almost ZERO foam), and provides powerful long-term electrostatic-steric suspensibility and viscosity reduction. In WP and WG formulations, both are used together: 3% to 10% Supragil MNS/88-E (dispersant) + 1.5% to 3% Supragil WP (wetter).

 Why is Supragil MNS/88-E preferred over lignosulfonates in Water Dispersible Granules (WG / WDG) and Wettable Powders (WP)?
Compared to wood-derived sodium or calcium lignosulfonates, synthetic Supragil MNS/88-E contains zero reducing wood sugars, has a much lighter buff color (avoiding dark brown spray-tank staining), generates virtually zero foam, will not caramelize or become sticky during high-temperature extrusion or spray drying (thermally stable > 250 °C), and delivers 2 to 3 times stronger adsorption onto hydrophobic organic active ingredients—ensuring > 90 percent CIPAC suspensibility even after 14 days of accelerated storage at 54 °C.

 What are the recommended dosage levels of Supragil MNS/88-E in WG, WP, and SC agrochemical formulations?
In Water Dispersible Granules (WG / WDG, extruded, fluid-bed, or spray-dried), Supragil MNS/88-E is typically dosed at 4.0 percent to 12.0 percent w/w (where it acts as both primary dispersant and crisp granule disintegrating binder). In Wettable Powders (WP), it is dosed at 3.0 percent to 8.0 percent w/w prior to air-jet micronization. In liquid Suspension Concentrates (SC, 400 to 600 g/L), it is incorporated at 1.5 percent to 5.0 percent w/w in the aqueous mill-base alongside a nonionic block copolymer or acrylic comb steric stabilizer.

 Why does Supragil MNS/88-E work so well in high-temperature pesticide Suspension Concentrates (SC) and textile disperse dyeing?
Unlike ethoxylated nonionic surfactants (such as tristyrylphenol ethoxylates or EO-PO block copolymers) which lose hydrogen bonding with water and precipitate above their Cloud Point (typically 50 °C to 75 °C), Supragil MNS/88-E is a permanently ionized strong sulfonic acid salt (-SO3Na) that has NO cloud point up to 100 °C+! Consequently, it prevents particle flocculation during high-energy wet bead milling, hot warehouse storage (> 50 °C), and high-temperature polyester jet dyeing at 130 °C to 140 °C.

 Is Supragil MNS/88-E stable in hard agricultural spray water, fertilizers, and extreme pH?
Yes, because the sulfonate group (-SO3-) is the conjugate base of a very strong acid (pKa < 1.0) and forms water-soluble complexes with divalent cations, Supragil MNS/88-E remains 100 percent ionized and soluble from pH 1.0 to 14.0 and in extreme hard waters exceeding 500 to 1,000 ppm CaCO3 (CIPAC Standard Waters A, D, and C), as well as in high-electrolyte liquid fertilizer tank mixes.

 Can Supragil MNS/88-E be combined with polycarboxylate dispersants (such as Sokalan CP 5) in WDG formulations?
Yes, combining 4.0 percent to 7.0 percent w/w Supragil MNS/88-E with 1.5 percent to 3.0 percent w/w of a sodium polycarboxylate (such as Sokalan CP 5 or Geropon TA/72) is a widely used industry strategy for premium WDG formulations: Supragil MNS/88-E anchors onto the hydrophobic aromatic surfaces of the pesticide crystals to prevent Ostwald ripening and caking, while the high-charge-density polycarboxylate chelates hard-water calcium ions and drives rapid osmotic granule disintegration ("bloom").

 Is Supragil MNS/88-E approved by the US EPA and compliant with EU Annex III co-formulant regulations?
Yes, sodium methylnaphthalene sulfonate formaldehyde condensates are approved by the US EPA under 40 CFR 180.910, 180.920, and 180.930 for pre- and post-harvest agricultural crop formulations with no tolerance limit restriction, and Supragil MNS/88-E complies with EU Regulation (EC) No 1107/2009 Annex III co-formulant requirements due to its NPEO-free composition and ultra-low residual free formaldehyde (< 0.05%–0.10%).

 How can agrochemical formulators, dyestuff plants, and industrial buyers source Supragil MNS/88-E and request COA, TDS, and SDS documents from Ataman Kimya?
Customers can procure Supragil MNS/88-E (CAS 81065-51-2 / 9084-06-4) in moisture-resistant 20 kg and 25 kg polyethylene-lined bags or palletized bulk shipments—supported by batch-specific Certificates of Analysis (COA), Technical Data Sheets (TDS), and GHS/CLP Safety Data Sheets (SDS)—directly from Ataman Kimya by calling +90 216 577 10 10 or emailing info@atamankimya.com.

TECHNICAL SUMMARY

Supragil MNS/88-E—universally recognized across international agrochemical, dyestuff, pigment, and specialty chemical standards as Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate, Methylnaphthalene Sulfonic Acid Formaldehyde Polymer Sodium Salt, and Sodyum Metilnaftalin Sülfonat Formaldehit Kondensatı (CAS Number 81065-51-2 / 9084-06-4 / 68425-94-5)—stands as the global benchmark low-foaming, high-active (~88 percent w/w) anionic polymeric dispersing and suspending agent for Wettable Powders (WP), Water Dispersible Granules (WG / WDG), Suspension Concentrates (SC), and disperse dye/pigment milling. Engineered with methylated bicyclic naphthalene rings linked by methylene bridges (Mw ~1,800 to 3,500 g/mol) and permanently ionized sulfonate groups (-SO3Na), Supragil MNS/88-E delivers powerful pi-pi hydrophobic crystal anchoring, high negative zeta potential (-45 to -65 mV), full stability across pH 1.0 to 14.0 and hard waters (> 500 to 1,000 ppm CaCO3), zero cloud point up to > 100 °C, thermal drying stability above 250 °C, near-zero Ross-Miles foaming, and full compliance with US EPA 40 CFR 180.910 / 180.920 and EU agrochemical co-formulant standards.

Ataman Kimya supplies premium, free-flowing Supragil MNS/88-E in moisture-barrier 20 kg and 25 kg polyethylene-lined multi-wall bags and palletized bulk quantities for crop-protection plants, pigment and textile dye manufacturers, latex compounders, and industrial slurry processors, backed by ready warehouse stock in Turkey, strict batch-to-batch analytical verification, and fast domestic and international logistics. To request a commercial quotation, pallet pricing, laboratory formulation samples, Technical Data Sheets (TDS), Safety Data Sheets (SDS), or a batch-specific Certificate of Analysis (COA) for Supragil MNS/88-E (CAS 81065-51-2), please contact the technical sales team at Ataman Kimya using the contact details below.

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