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Characteristics of Polystyrene (PS) Plastic
| Clarity | Transparent | Impact Resistant | Poor to Good |
| Moisture Barrier | Fair | Heat Resistance | Fair |
| Oxygen Barrier | Poor | Cold Resistance | Poor |
| Acid Resistance | Fair to Good | Sunlight Resistance | Fair |
| Grease & Oil Resistance | Fair to Good | Specific Gravity | 1.05 |
| Maximum Utilization Temp. | 158°F | Stiffness | Moderate to High |
| Minimum Utilization Temp. | 14°F |
Other Characteristics of PS:
The material surface of PS (Polystyrene) is a transparent, rigid and glass like polymer. PS is biologically inert , non-toxic and light, and heat stable. PS containers have a good stress crack and impact resistance, as well as good chemical resistance to many aqueous solutions. PS has poor barrier properties to oxidizing agents and halogenated solvents. It cannot be used at elevated temperatures.
Chemical Resistance :
| Acids – Dilute | Good |
| Acids – Concentrated | Limited |
| Alcohols | Good |
| Aldehydes | Poor |
| Bases | Good |
| Esters | Poor |
| Ethers | Poor |
| Hydrocarbons, Aliphatic | Poor |
| Hydrocarbons, Aromatics | Poor |
| Hydrocarbons, Halogenated | Poor |
| Ketones | Poor |
| Oils, Minerals | Good |
| Oil, Vegetable | Good |
PS for Laboratories:
PS is a good choice for packaging, because it has many versatile properties. PS is clear, hard and lightweight which makes it a good alternative to glass. It can be sterilized by gas and gamma irradiation.
Other uses of PS
PS is manufactured as both ridged and foamed material. Polystyrene is commonly used for CD packaging, aspirin bottles, cups, plates and cutlery.
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*Note: Always be sure to test your products with the material/container chosen. Any information presented is for reference only, be sure to verify and test.