Polystyrene (PS) CAS#9003-53-6
Good Processability: Polystyrene has excellent fluidity when melted, easy for injection molding, extrusion and foaming processing. It can be made into transparent rigid products or foam materials for different scenarios.
Stable Performance: General polystyrene is transparent, resistant to many dilute acids and alkalis under room temperature. It has good electrical insulation, but poor weather resistance and is easy to be corroded by aromatic solvents.
Versatile Uses: It is widely used for disposable tableware, packaging containers, electronic housings, foam insulation boards, toy parts and laboratory consumables.
Pellet Form & Non-Hygroscopic Nature: This material is supplied as colorless transparent pellets. It is non-hygroscopic and can be stored in dry and ventilated warehouse.
Polystyrene, characterized by the molecular formula (C₈H₈)ₙ, presents as colorless transparent thermoplastic pellets. It is hard and brittle, with outstanding light transmittance. It dissolves in benzene, chloroform and ketone solvents. Different grades include GPPS (general purpose polystyrene), HIPS (high impact polystyrene) and EPS (expandable polystyrene).
Polystyrene Chemical & Physical Properties
| Item | Specification |
|---|---|
| Melting point | 240–260 °C (processing temp) |
| Density | 1.04–1.06 g/cm³ |
| Refractive index | 1.59 |
| Storage temp | Room temperature, dry and ventilated |
| Solubility | Insoluble in water; soluble in aromatic hydrocarbons |
| Form | Pellet |
| Color | Colorless transparent |
| Odor | Odorless |
| Tensile strength | 35–55 MPa |
| Elongation at break | 1–3 % |
| Sensitive | Non-hygroscopic |
| Stability | Stable, avoid strong oxidants and aromatic solvents |
| CAS DataBase Reference | 9003-53-6 |
Safety Information
| Item | Specification |
|---|---|
| Hazard Codes | Not classified as dangerous goods |
| Risk Statements | No R phrase |
| Safety Statements | Avoid dust inhalation |
| WGK Germany | 1 |
| TSCA | Yes |
| HS Code | 39031100 / 39031900 |
Polystyrene is a common styrene-based polymer raw material. GPPS is used for transparent disposable cups, cosmetic bottles and stationery; HIPS is applied in home appliance shells and toys; expandable EPS is used for thermal insulation packaging and construction insulation boards。
