Polyethylene CAS# 9002-88-4
High Production Volume and Reliability: Polyethylene is the most widely produced polymer globally, ensuring strong supply stability and broad industrial applicability.
Versatile Material Options for Diverse Applications: Different grades—LDPE, HDPE, and UHMWPE—offer flexibility, from soft films and coatings to rigid containers, fibers, and industrial components.
Superior Mechanical and Durability Properties: UHMWPE provides exceptional resistance to environmental stress cracking, low moisture absorption, excellent fatigue resistance, and outstanding impact strength.
Ideal for High-Wear and High-Impact Environments: Due to its robust performance, UHMWPE is suitable for manufacturing wear-resistant and impact-resistant parts in textile machinery, including gears, washers, and rubber components.
Polyethylene (PE) is currently the most widely produced high-grade polymer material and holds the top position in global plastic output. Low-density polyethylene (LDPE) is primarily utilized in flexible products like films and coatings, while high-density polyethylene (HDPE) is mainly applied to rigid items such as bottles and containers, and can also be spun into fibers (referred to as ethylene fibers by Chemicalbook) for making fishing nets, ropes, and similar products. Ultra-high molecular weight polyethylene (UHMWPE) offers a range of outstanding properties, including excellent environmental stress cracking resistance, low moisture absorption, strong fatigue resistance, and high impact strength. It is commonly used in textile machinery for components that require wear and impact resistance, such as rubber joints, gears, and washers.
| English Name | Polyethylene |
| English Synonyms | pad522;pe512;pe617;pen100;pep211;pes100;pes200;petrothene |
| CAS Number | 9002-88-4 |
| Molecular Formula | (C2H4) n |
| Molecular Weight | 28.05316 |
| EINECS Number | 618-339-3 |
| Melting point | 92 °C |
| Boiling point | 48-110 °C (Press: 9 Torr) |
| Density | 0.962 g/mL at 25 °C |
| Refractive index | 1.51 |
| Flash point | 270℃ |
| Storage conditions | -20℃ |
| Form | Powder |
| Color | White |
| Specific gravity | 0.95 |
| Biological origin | rabbit |
| Water solubility | Soluble in acetone and benzene. Insoluble in water. |
| Merck value | 147,567 |
| Dielectric constant | 2.2 (Ambient) |
| Stability | Stable, but slowly decomposes under UV light or sunlight. Incompatible with halogens, strong oxidizers, benzene, petroleum ether, aromatic hydrocarbons and chlorinated hydrocarbons, and lubricating oils. |
| Surface tension | 35.7 mN/m at 20°C |
Application
Polyethylene is a thermoplastic resin produced by the addition polymerization of ethylene, and its molecular structure contains only carbon and hydrogen elements. It is non-toxic, has excellent low-temperature resistance (minimum operating temperature can reach -100℃), and good chemical stability. Polyethylene can be processed into films, wire and cable sheaths, pipes, various hollow products, injection molded products, fibers, etc., and is therefore widely used in agriculture, packaging, automobiles, and other fields.
