POLYBUTENE

Polybutene is a hydrophobic, low-volatility polymer valued for its viscosity, tackiness and flexibility.
Polybutene improves adhesion, lubrication and moisture resistance in many formulations.
Adhesives, sealants, lubricants, cosmetics and polymer products widely use Polybutene.

CAS Number: 9003-28-5 (poly(1-butene)); 9003-29-6 (polybutylene, mixed butenes)
EINECS: 500-004-7
MDL Number: MFCD00084367
Molecular Formula: (C₄H₈)ₓ
COSING Ref: 78566

Synonyms: Polybutene, Polybutylene, PB, PIB (polyisobutylene, isobutylene-dominant), Poly(1-butene), PB-1, Butene polymer, 1-Butene homopolymer, Indopol (series), Hyvis, Amoco H/L series, Chevron 6/12/16/18, Synton, Oronite 6, SH 015, Polyvis series, Witron 131, PB 2110, H 100/H 300/H 1500/H 1900, HV-1900, Oktol 600, Petrofin 100, CAS 9003-28-5, CAS 9003-29-6, EINECS 500-004-7, MDL MFCD00084367

Polybutene consists of hydrocarbon chains produced from butene-based monomers.
The molecular weight and molecular structure of Polybutene vary according to the production process.

Polybutene commonly appears as a clear, colorless or pale-yellow viscous liquid.
Higher-molecular-weight grades of Polybutene can display a thick and highly tacky consistency.

Water does not dissolve Polybutene because of its nonpolar hydrocarbon structure.
Hydrocarbon solvents and many oils show good compatibility with Polybutene.

Polybutene provides low volatility and strong resistance to moisture.
The hydrophobic character of Polybutene helps formulations form water-repellent films.

Manufacturers produce Polybutene through the controlled polymerization or oligomerization of C₄ olefins.
Reaction conditions determine the molecular weight, viscosity and unsaturation level of Polybutene.

Polybutene is available in numerous viscosity grades for different formulation requirements.
Formulators select Polybutene according to the desired flow, tack and film thickness.

Adhesive formulations use Polybutene to improve tack and surface contact.
Polybutene can maintain flexibility and adhesion in pressure-sensitive adhesive systems.

Sealants incorporate Polybutene to improve flexibility and moisture resistance.
Polybutene helps sealant formulations maintain a continuous and water-resistant barrier.

Lubricant formulations use Polybutene as a viscosity modifier and film-strength enhancer.
Polybutene can improve the adherence of lubricating films to metal surfaces.

Two-stroke engine oils may contain Polybutene to support lubrication and reduce excessive smoke.
Carefully selected Polybutene grades can improve oil performance under demanding engine conditions.

Metalworking products employ Polybutene to enhance lubricity and surface coverage.
Polybutene helps cutting and forming fluids remain attached to working surfaces.

Greases and protective compounds may use Polybutene to increase tackiness.
Polybutene can reduce lubricant displacement from moving or exposed components.

Cosmetic formulations use suitable Polybutene grades as emollients, binders and gloss-enhancing ingredients.
Lip products containing Polybutene can develop a smooth texture and glossy appearance.

Polybutene can function as a carrier for pigments and other oil-soluble ingredients.
The clear appearance of Polybutene supports its use in color-sensitive formulations.

Printing inks may contain Polybutene to control flow, adhesion and gloss.
Polybutene can help ink films remain flexible after application.

Rubber and plastic formulations use Polybutene as a processing aid or flexibilizing component.
Polybutene can improve compound flow and reduce brittleness in selected polymer systems.

Cable compounds and electrical materials may incorporate Polybutene for flexibility and moisture protection.
The insulating hydrocarbon structure of Polybutene supports its use in selected electrical formulations.

Polybutene can be chemically modified to produce functional derivatives.
Functionalized Polybutene serves as an intermediate for lubricant and fuel additives.

Viscosity, molecular-weight distribution, color and flash point represent important quality parameters for Polybutene.
Analytical testing helps manufacturers confirm the consistency and performance grade of Polybutene.

Uses of Polybutene:
Polybutene is used in cosmetics and personal care as a binder, viscosity controller, glossing agent, and tackifier: in lip glosses and lipsticks it provides gloss, shine, smoothness, and the characteristic sticky-spreadable texture; in lipstick formulations it acts as a binder holding pigments and waxes together without affecting colour or odour; in hair removal (depilatory) products its natural tackiness facilitates adhesion of wax strips; in sunscreens (O/W systems) higher-molecular-weight polybutene acts as a film former, improving water resistance; it is non-comedogenic, non-irritating, and non-penetrating (large molecules remain on the skin surface); it is CIR approved at ≤4% concentration.
Polybutene is used as a polymer extender, plasticiser, tackifier, and wetting agent in pressure-sensitive adhesives (PSA), hot-melt adhesives (HMA), and hot-melt pressure-sensitive adhesives (HMPSA): it improves cold flexibility, adhesion, quick-stick and peel strength in formulations based on SIS, SBR, and high-molecular-weight polybutene; nonionic polybutene emulsions are formulated into water-based PSA to enhance adhesion and temperature stability while reducing adhesive cost; end-use applications include paper laminates, labels and tapes, masking tape, friction tape, surgical tape, colourless adhesives, foil and fibre laminates, and industrial tapes.
Polybutene is the tackifier of choice for linear low-density polyethylene (LLDPE) cling films for food wrapping: when incorporated into LLDPE at low concentrations, polybutene imparts cling (slight tackiness), maintains film clarity, and provides durability; it has food-grade approval for use in food contact applications per FDA 21 CFR 177.1570; it acts as a cling agent in cling masterbatches for standard polyolefin stretch wrap films for packaging, bundling, and pallet wrap applications.
Polybutene is used in sealants, caulks, and construction coatings as a primary ingredient in wood and concrete sealers, as an extender in roof and window putties, and as a processing aid in sealant formulations; it binds and wets fillers in caulks, improving flow characteristics; its plasticiser effect increases sealant flexibility; it exhibits good barrier properties, tackiness, and wettability; higher-molecular-weight grades are used in speciality roofing and waterproofing membrane formulations.
Polybutene is used as a lubricating oil base, viscosity modifier, and VI improver in two-stroke engine oils (smoke-free, clean-burning — thermal depolymerisation to volatile monomers rather than sludge), compressor oils, gear oils, rolling and wire-drawing lubricants, and lubricating oil additive packages; higher-molecular-weight liquid grades (1,000–1,500 MW) serve as intermediates for the synthesis of polyisobutenylsuccinic anhydride (PIBSA), which is reacted with amines to produce the polyisobutenylsuccinimide (PIBSI) engine oil dispersants widely used in motor oil formulations; NSF H1 accredited grades are used in food-grade lubricants for food and beverage processing machinery.
Polybutene is used as an electrical insulation oil in cable insulation, transformers, and electrical components where its clean thermal depolymerisation prevents the formation of conductive carbon deposits (unlike mineral oils and thermoplastics) and avoids increased electrical insulation thickness that could accelerate overheating in case of fire or fault; this property makes polybutene safer than mineral oil in electrical applications subject to overheating or fire risk.
Polybutene is used as a rubber modifier and processing aid in elastomer compounding: it adds tack, acts as a polymer extender (reducing formulation cost), and provides good colour and chemical resistance; it is not easily extracted from vulcanised elastomers by solvents, heat, or UV exposure, providing longer end-product life; it also improves the viscosity index of mineral oil blends.
Polybutene-1 (PB-1) solid resin, produced by Ziegler-Natta isotactic polymerisation of 1-butene (isotacticity 98–99.5%, Mw 2.3×10⁵–7.5×10⁵ Da), is used for extruded and injection-moulded hot and cold pressurised water piping systems, plumbing fittings, underfloor heating pipes, and transport pipes for abrasive and corrosive fluids; PB-1's outstanding creep resistance (superior to polyethylene and polypropylene at >100 h stress), heat fusion bond strength, low noise transmission, flexibility across −20°C to 100°C, and resistance to stress cracking make it the technically preferred polyolefin for pressurised piping without the need for cross-linking or compounding.
Polybutene is used as a pesticide and insecticide carrier (increasing active ingredient effectiveness) and as the active entrapment medium in rodent and insect sticky traps and bird/squirrel repellent formulations; as a dust suppressant and anti-caking agent base for dry-blend fertilisers and powdered products; as an asphalt and bitumen modifier (improving low-temperature flexibility and crack resistance); as a chewing gum base component (alongside polyisobutylene); and as an ink dispersant and thickener in industrial inks and greases.

Benefits and Advantages of Polybutene:
Polybutene's natural tackiness and exceptional compatibility with almost all cosmetic, adhesive, and industrial ingredients — including mineral oils, synthetic hydrocarbon polymers, waxes, resins, asphalt, rosin, and gum — makes it a uniquely versatile processing aid and performance modifier that improves the consistency, feel, adhesion, and flexibility of end products without affecting their colour, odour, or chemical properties; this broad compatibility, combined with its ready availability in a wide range of molecular weight and viscosity grades, enables polybutene to function as binder, extender, plasticiser, tackifier, viscosity modifier, and wetting agent within a single chemical family.
Polybutene undergoes clean, complete thermal depolymerisation to volatile butene monomers at temperatures below the combustion threshold — leaving no gum, sludge, or conductive carbon deposits — a property that distinguishes it fundamentally from mineral oils (which leave carbonaceous deposits) and thermoplastics (which melt and spread); this depolymerisation property makes polybutene uniquely suitable for two-stroke engine lubricants (smoke-free combustion), electrical insulation oils (no carbon track formation), and industrial cleaning lubricants.
The very high creep resistance of solid PB-1 resin — attributable to the large number of ethyl side chains preventing polymer chain slippage and the high molecular weight of commercial grades — combined with its flexibility, heat fusion bondability, and resistance to environmental stress cracking make PB-1 the technically preferred piping material for pressurised hot and cold water systems, outperforming PE-X, PE-RT, and PP-R in long-term creep strength without requiring cross-linking, compounding, or copolymerisation.
Polybutene's non-toxicity (FDA-approved for food contact, EWG Score 1, NSF H1 lubricant certification), non-sensitising character, non-comedogenicity, and extremely large molecular size (preventing skin penetration) collectively make it one of the safest synthetic polymer ingredients available for cosmetic, food-contact, and food-grade lubricant applications, with no demonstrated adverse health effects at recommended use concentrations.

Features of Polybutene:
Liquid polybutene is a colourless, water-white (APHA <10–50), odourless, non-drying, viscous to very viscous sticky liquid at room temperature; it is stable when exposed to UV light and remains more stable than conventional mineral oil of equal APHA colour; it is insoluble in water; it is soluble in aliphatic, aromatic, and chlorinated hydrocarbon solvents; it is compatible with mineral oils, synthetic hydrocarbons, waxes, rosin, asphalt, and gum; density 0.83–0.92 g/cm³ (grade-dependent); viscosity at 100°C ranges from ~5 cSt (low-MW grades) to >10,000 cSt (high-MW grades); molecular weight range ~300–>100,000 Da (commercial liquid grades: ~300–5,000 Da); InChIKey VXNZUUAINFGPBY-UHFFFAOYSA-N; SMILES C=CCC.
Polybutene is available in a broad range of grades differentiated primarily by molecular weight (and hence viscosity): low-MW grades (Indopol L10/L14/L50, ~300–800 Da) are low-viscosity liquids used in adhesive processing aids, lubricant additives, and pesticide carriers; medium-MW grades (Indopol H50/H100/H300, ~800–2,500 Da) are medium-viscosity tacky liquids used in adhesives, sealants, and lubricants; high-MW grades (H1500/H1900/HV-1900, ~2,500–10,000 Da) are very high-viscosity tackifiers used in HMA, PSA, and rubber compounding; food-grade and NSF H1 grades are available for cosmetic and food-contact applications.
Key performance properties: high natural tackiness (adhesion, wettability); excellent clarity and water-whiteness; UV stability (more stable than mineral oil at equivalent APHA colour); clean thermal depolymerisation to butene monomers (no gum, sludge, or carbon deposit); excellent compatibility with SIS, SBR, LLDPE, PE, PP, and most synthetic polymers; good shear stability in lubricant applications; excellent water whiteness enabling easy dyeing and colourability in liquid products; low polarity, low degree of unsaturation, and closely packed branched-chain structure provide resistance to chemical reaction (autoxidation, pyrolysis under normal conditions); compatible with both mineral oils and synthetic lubricants.
Solid PB-1 resin (isotactic poly(1-butene)): two crystalline forms — Form II (metastable, mp 124°C, d 0.89 g/cm³, formed from melt) converts to Form I (stable, mp 135°C, d 0.95 g/cm³) over 5–7 days at room temperature; thermoplastic processing by injection moulding or extrusion above 190°C; density 0.92 g/cm³; unique creep resistance; flexibility across −20°C to 100°C; PB-1 random copolymers with PE or PP are available for underfloor heating and flexible film applications.

Chemical Properties of Polybutene:
Liquid polybutene is produced by the polymerisation of C₄ hydrocarbon feedstocks — a mixture of 1-butene, 2-butene, and isobutylene from C₄ refinery streams or steam cracking — over Lewis acid (BF₃, AlCl₃) or Brønsted acid catalysts; the presence of isobutylene as the dominant monomer produces the characteristic branched isoparaffinic structure responsible for liquid polybutene's tackiness, UV stability, and chemical inertness; the molecular weight is controlled by reaction temperature, catalyst type, and chain transfer agent concentration; higher reaction temperatures produce lower-molecular-weight products.
Solid PB-1 is produced by stereospecific Ziegler-Natta polymerisation of 1-butene using TiCl₃ and diethyl aluminium chloride (DEAC) catalyst: the reaction is highly stereoregular, producing predominantly isotactic (98–99.5%) high-molecular-weight PB-1 (Mw 2.3×10⁵–7.5×10⁵ Da); commercial PB-1 products can be further modified by random copolymerisation with ethylene or propylene; the highly isotactic structure and unique crystalline transformation (Form II → Form I) are responsible for the outstanding creep resistance and mechanical properties of PB-1 pipe resin.
CAS numbers: 9003-28-5 (poly(1-butene), primary CAS for liquid polybutene and PB-1); 9003-29-6 (polybutylene, mixed butene grades); EINECS 500-004-7; DTXSID00904731 / DTXSID2034831; InChI=1S/C4H8/c1-3-4-2/h3H,1,4H2,2H3; InChIKey VXNZUUAINFGPBY-UHFFFAOYSA-N; SMILES C=CCC; FDA 21 CFR: 175.105, 175.125, 177.1570, 178.1005.
Chemical stability: polybutene undergoes combustion (above flash point), slow pyrolysis at elevated temperatures, and slow autoxidation in the presence of oxygen and heat; its low polarity, low degree of unsaturation, and closely packed, branched-chain molecular structure make liquid polybutene resistant to chemical reaction under ambient conditions; it is stable to dilute acids and alkalis; it is incompatible with strong oxidising agents; PB-1 resin shows resistance to oxidising and chemical environments broadly similar to polypropylene; like polypropylene, PB-1 is immune from environmental stress cracking.

Production of Polybutene:
Liquid polybutene is produced industrially by the cationic polymerisation of C₄ hydrocarbon feedstocks (1-butene, 2-butene, isobutylene) over Lewis acid (BF₃/promoter, AlCl₃) or Brønsted acid catalysts; the C₄ feedstock is dried and fed into a reaction chamber together with the catalyst; the molecular weight of the product is controlled by reaction temperature (lower temperature → higher MW); the oligomerisation produces a mixture of polymer chains with the desired molecular weight distribution; the product is subsequently separated from catalyst residues by washing and neutralisation, and then fractionated by vacuum distillation to obtain specific molecular weight/viscosity grades.
Solid PB-1 is produced by stereospecific Ziegler-Natta polymerisation of 1-butene (a 1-butene solution is dried and fed into a reaction chamber; TiCl₃ + DEAC Ziegler-Natta catalyst is added; the reaction produces predominantly isotactic high-molecular-weight PB-1); thermoplastic processing is carried out by injection moulding or extrusion above 190°C; upon crystallisation from the melt, Form II is initially formed, which converts to the stable, higher-performance Form I over 5–7 days at room temperature.
Commercial liquid polybutene grades are available from leading manufacturers including Ineos (Indopol, Hyvis), TPC Consolidated (formerly Amoco), Daelim (Polyvis), and Soltex; molecular weight grades from ~300 Da (L-grade, low viscosity) to >100,000 Da (H-grade, ultra-high viscosity); packaging: 15–20 kg cans, 200 kg drums, 850 kg IBC, ISO containers, road tanker; PB-1 pipe resin is manufactured at world scale in the Netherlands; food-grade, NSF H1, and cosmetic-grade specifications are available for regulated applications.

Polybutene Material Safety Data Sheet (MSDS):

Handling of Polybutene:
Liquid polybutene is a low-hazard material: non-toxic (oral LD50 >15 g/kg), practically non-irritating to skin and eyes, non-flammable at ambient temperature (flash point typically >100°C for liquid grades); standard industrial hygiene practices are sufficient; avoid prolonged skin contact (tacky nature may cause mechanical irritation and skin degreasing with light grades); wear gloves and eye protection for routine handling; avoid generating aerosols or vapours at elevated temperatures.
Liquid polybutene vapours are non-irritating to eyes and throat at low concentrations; at high temperatures vapours from low-molecular-weight grades may act as simple asphyxiants in confined spaces at very high concentrations; use local exhaust ventilation for heated polybutene processing; solid PB-1 resin pellets are handled using standard thermoplastic processing precautions (inhalation of dust, hot-melt vapours, and polymer degradation products should be avoided during extrusion and injection moulding above 190°C).

Polybutene SDS:

Stability and Reactivity of Polybutene:

Chemical stability:
Polybutene is chemically stable under normal ambient storage and handling conditions; it does not hydrolyse, does not react with dilute acids or alkalis, and does not react with water.
Slow autoxidation may occur on prolonged exposure to air and heat; antioxidants are incorporated into lubricant and rubber formulations to inhibit oxidative degradation.

Reactivity:
Liquid polybutene is not significantly reactive under normal ambient conditions; it is not flammable at ambient temperature for most commercial grades (flash point >100°C); it undergoes clean thermal depolymerisation to butene monomers at elevated temperatures (below combustion temperature).
Strong oxidising agents may react with polybutene at elevated temperature; avoid contact with concentrated peroxides, permanganates, and halogens.

Conditions to avoid:
Strong oxidising agents at elevated temperature.
Temperatures above flash point near ignition sources.
Prolonged exposure to air at high temperature without antioxidant protection (autoxidation).

Incompatible materials:
Strong oxidising agents.
Concentrated mineral acids at elevated temperature (may catalyse depolymerisation).

Hazardous decomposition products:
No hazardous decomposition products under normal ambient conditions.
On combustion: CO, CO₂, and C₄ hydrocarbon fragments.
Clean thermal depolymerisation (property of liquid polybutene): butene monomers (1-butene, 2-butene, isobutylene) — volatile, simple asphyxiants at high concentration.

Handling and Storage of Polybutene:

Handling:
Handle in well-ventilated areas; wear gloves and safety glasses for routine handling.
The tacky nature of polybutene requires care to prevent accidental skin or surface contact; use appropriate release agents and handling equipment.
For heated polybutene processing (hot-melt adhesive, moulding): use local exhaust ventilation; avoid skin contact with hot material.
Standard thermoplastic processing precautions for PB-1 resin above 190°C.

Storage:
Store in tightly closed containers in a cool, dry, well-ventilated area away from heat and ignition sources.
No special temperature requirement for liquid grades; for PB-1 resin, store away from moisture.
Shelf life: stable for extended periods under recommended storage conditions; protect from strong oxidising agents.
Packaging: 15–20 kg cans; 200 kg steel or HDPE drums; 850 kg IBC; ISO containers; bulk road tanker.

First Aid Measures for Polybutene:

Inhalation: Move to fresh air; liquid polybutene vapours are non-irritating to eyes and throat; low-MW grade vapours at very high concentrations may act as simple asphyxiants.
Skin contact: Remove tacky material with mineral oil or appropriate solvent; wash with soap and water; polybutene is practically harmless to skin.
Eye contact: Rinse with plenty of water; seek medical advice if irritation persists.
Ingestion: Rinse the mouth; seek medical advice; very low acute oral toxicity (LD50 >15 g/kg, Grade 0).

Firefighting Measures for Polybutene:

Suitable extinguishing media: CO₂, dry chemical, foam; water mist (for container cooling).
Specific hazards: Liquid polybutene is combustible at elevated temperatures (flash point typically >100°C for liquid grades — not flammable at ambient temperature); thermal depolymerisation produces volatile butene monomers — monitor for flammable vapour accumulation near heated polybutene; combustion produces CO and CO₂.
Protective equipment for firefighters: SCBA and full protective clothing; cool containers with water spray; prevent runoff from entering drains.

Accidental Release Measures for Polybutene:

Personal precautions: Wear gloves and eye protection; contain spill — note that spilled polybutene is very sticky and difficult to clean; use appropriate release agents or solvents (mineral spirit, aliphatic solvent) for cleanup.
Environmental precautions: Polybutene is not biodegradable; prevent entry into drains, watercourses, and soil; notify environmental authorities for large spills.
Clean-up methods: Absorb with inert absorbent material; use solvent (mineral spirit or aliphatic hydrocarbon) to facilitate cleanup of tacky spills; collect in sealed, labelled containers; dispose as industrial polymer waste per applicable regulations.

Exposure Controls / Personal Protective Equipment for Polybutene:

Engineering controls: Good general ventilation for routine handling; local exhaust ventilation for heated processing operations (hot-melt, extrusion, injection moulding); closed-system transfer for bulk liquid grades.
Eye protection: Safety glasses; chemical splash goggles for heated operations or aerosol generation.
Hand protection: Chemical-resistant gloves (nitrile or neoprene) — note: tacky material may adhere to unprotected hands.
Respiratory protection: Not required under normal ambient handling; OV cartridge respirator for heated operations generating polybutene vapour or aerosol; SCBA for fire response.

Polybutene Identifiers:
CAS Number: 9003-28-5 (poly(1-butene)); 9003-29-6 (polybutylene, mixed butenes)
Deprecated CAS: 11121-22-5; 42612-15-7; 52012-58-5; 9037-04-1
EINECS: 500-004-7
MDL Number: MFCD00084367
DTXSID: DTXSID00904731; DTXSID2034831
COSING Ref: 78566
IUPAC Name (monomer): 1-Butene, homopolymer
Molecular Formula: (C₄H₈)ₓ; monomer MW: 56.11 g/mol
InChI: InChI=1S/C4H8/c1-3-4-2/h3H,1,4H2,2H3
InChIKey: VXNZUUAINFGPBY-UHFFFAOYSA-N
SMILES: C=CCC
XLogP3-AA: 2.40 (est.)
Density: 0.91 g/mL at 25°C (lit.); 0.83–0.95 g/cm³ (grade-dependent)
Melting point: 104°C (Sigma); Form I: 135°C; Form II: 124°C (PB-1 resin)
APHA colour: <10–50 (liquid grades)
GHS Classification: Not classified (liquid grades and PB-1 resin)
FDA: 21 CFR 175.105; 175.125; 177.1570; 178.1005 (food contact)
EWG Score: 1 (cosmetics)
CIR: Approved for cosmetic use (≤4% recommended)
NSF H1: Available (food-grade lubricant grades)
COSING Functions: Binding, Viscosity controlling, Depilatory
Biodegradability: Not biodegradable (liquid grades)
Piping standard: EN ISO 15876; EN ISO 22391 (PB-1 solid resin)

Properties of Polybutene:
Physical state: Liquid (low-MW grades) to semi-solid (high-MW grades); solid resin (PB-1)
Appearance: Colourless, water-white, clear (APHA <10–50), odourless, sticky viscous liquid (liquid grades)
Density: 0.83–0.95 g/cm³ (grade-dependent); PB-1: ~0.92 g/cm³
Melting point: 104°C (liquid grade solidification); PB-1 Form I 135°C, Form II 124°C
Water solubility: Insoluble
Solvent solubility: Soluble in aliphatic, aromatic, and chlorinated hydrocarbon solvents
Compatibility: Mineral oils, synthetic hydrocarbons, waxes, resins, asphalt, rosin, gum, elastomers (SIS, SBR), LLDPE, PE, PP
Molecular weight range: ~300 Da (light grades) to >7.5×10⁵ Da (PB-1 resin)
UV stability: Excellent (more stable than mineral oil at equivalent APHA)
GHS Classification: Not classified
FDA: 21 CFR 175.105/125; 177.1570; 178.1005
Storage: Cool, dry; tightly closed; away from heat, ignition sources, and strong oxidants

Polybutene Properties — Specifications:
Product name: Polybutene (liquid grades) / Polybutene-1 resin (solid grades)
CAS Number: 9003-28-5 (poly(1-butene)); 9003-29-6 (polybutylene)
Molecular Formula: (C₄H₈)ₓ
Appearance: Colourless, water-white, odourless, sticky viscous liquid (liquid grades); white pellets/granules (PB-1 resin)
APHA colour: <10–50 (liquid grades)
Density: 0.83–0.95 g/cm³
MW range: ~300 to >100,000 Da (liquid); 2.3×10⁵–7.5×10⁵ Da (PB-1)
Viscosity: grade-specific (5 cSt to >10,000 cSt at 100°C)
Water content: <50 ppm (typically)
Acid value: <0.1 mgKOH/g (typically)
GHS: Not classified
FDA compliance: 21 CFR 175.105; 175.125; 177.1570; 178.1005
CIR approved: Yes (cosmetics, ≤4%)
NSF H1: Available (food-grade lubricant grades)
EWG Score: 1
Biodegradability: Not biodegradable (liquid grades)
Storage: Cool, dry, away from heat and oxidants; tightly closed
Packaging: 15–20 kg cans; 200 kg drums; 850 kg IBC; ISO container; bulk tanker
Documents: TDS, SDS, CoA, FDA compliance letter, NSF H1 certificate (where applicable)

Names of Polybutene:
Polybutene
Polybutylene
PB
PB-1 (polybutene-1, solid resin)
PIB (polyisobutylene, isobutylene-dominant liquid grade)
Poly(1-butene)
1-Butene homopolymer
Butene polymer
Indopol (series — Ineos)
Hyvis (series)
Amoco H/L series
Chevron 6/12/16/18
Polyvis series
Oronite 6
SH 015
PB 2110
H 100/H 300/H 1500/H 1900
HV-1900
Oktol 600
Petrofin 100
Witron 131
SV 7000
LV 50
HE 375/HE 1975
2000H/300H
Polybuden 300H
Santac 52
Actipol E6
CAS 9003-28-5
CAS 9003-29-6
EINECS 500-004-7
MDL MFCD00084367
COSING 78566
DTXSID00904731