Polybutenes
| Formula: | (C₄H₈)ₙ |
| CAS Number: | 9003-29-6 |
| EC Number (EINECS): | 212-702-3 |
| HS Code: | 39039090 |
| UN Number: | Not classified as dangerous goods |
| IUPAC Name: | Polybutene |
| Also Known As: | Polyisobutylene; PIB |
| Molecular Weight, g/mol: | Variable, depending on grade |
Typical Specifications
| Appearance: | Clear to slightly amber viscous liquid |
| Odor: | Mild hydrocarbon odor |
| Density, g/cm³ (at 20°C): | 0.91–0.94 |
| Flash Point, °C: | >220 |
| Solubility: | Insoluble in water; soluble in hydrocarbons |
| Grades Available: | Low, Medium, High Viscosity |
| Packaging: | 200kg drums, 1000kg IBC, bulk ISO tanks |
Applications / Uses
Primary Applications
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Base polymer for adhesives, sealants, and caulks
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Viscosity modifier in lubricants and greases
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Additive in rubber compounding and polymer blends
Secondary Applications
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Plasticizer for PVC and other polymers
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Component in coatings, inks, and cosmetics formulations
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Used in fuel and oil additives for performance enhancement
End Industries Served: Lubricants, Adhesives & Sealants, Rubber, Plastics, Coatings, Cosmetics, Petrochemicals
Safety & Handling Information
Hazard Class (GHS): Not classified as hazardous; may cause mild skin irritation
Hazard Statements (H-Codes):
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H315: Causes skin irritation (on prolonged contact)
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H319: Causes serious eye irritation
Precautionary Statements (P-Codes):
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P280: Wear protective gloves/eye protection
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P302 + P352: IF ON SKIN – wash with plenty of soap and water
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water
Storage Conditions
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Store in a cool, dry, ventilated area
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Protect from heat and direct sunlight
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Keep containers tightly closed
Transport Information
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ADR/RID: Not classified as dangerous goods
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IMDG: Not classified as dangerous goods
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IATA: Not classified as dangerous goods