Polymers & Resins
REACH
Polyethylene
CAS Number
9002-88-4
EC Number
618-339-3
Abbreviation
HDPE
What is Polyethylene?
Polyethylene (CAS 9002-88-4), also known commercially as polythene and abbreviated as HDPE in its high-density form, is one of the most produced thermoplastic polymers in global supply chains.
Where is Polyethylene used?
- Packaging: bottles, films, and containers for food, personal care, and industrial chemical products
- Construction: pipe systems, geomembranes, and vapor barriers
- Automotive: fuel tanks, under-hood components, and interior trim parts
- Printing and flexible packaging: shrink films and lamination layers
- It functions as a structural and barrier material in industrial manufacturing.
Good to know: Grades are differentiated by density classification including LDPE, LLDPE, MDPE, and HDPE; each grade targets distinct processing and performance requirements. Food-contact and pharmaceutical grades meet FDA, EU, and USP compliance standards.
Other Names (Synonyms)
poly(methylene)|polythene|PEHD|HDPE|Ethene, homopolymer|Ethylene, polymers|Alathon 14|Rigidex 50|E610R
What are the physical properties of Polyethylene?
Melting Point 133 °C
Boiling Point 260 °C
Density 0.94 g/cm³ (solid) (powders)
Flash Point 270 °C
Appearance solid; appearance depends upon method of forming;
Color White
Form powder
Water Solubility Soluble in acetone and benzene. Insoluble in water.
Refractive Index 1.51
Which trade and regulatory codes apply to Polyethylene?
HS Code 39041090
Storage Class 11 - Combustible Solids
WGK (Germany) 3