EPS Chemical Compatibility Information
The EPS chemical compatibility data presented here provides guidance on how expanded polystyrene (EPS) interacts with a range of chemicals under various conditions. This information is based on data from reliable sources, but please note it is intended as a preliminary guide. Factors like the specific service conditions and EPS design can significantly impact compatibility. Before finalizing a material choice, it is critical to test the EPS chemical compatibility in realistic conditions to confirm that it meets the application’s environmental requirements.
The table below lists chemicals alphabetically to help you quickly locate each substance. The EPS chemical compatibility is rated using three symbols:
- C (Compatible): Little to no effect on EPS; no impairment in serviceability.
- LC (Limited Compatibility): EPS exhibits some effect but may remain serviceable; additional testing in the specific application is recommended.
- NC (Not Compatible): Significant impact on EPS, potentially including dissolution; not recommended for use.
If your chemical is not listed or its exact composition is unknown, we advise a preliminary compatibility test at the highest anticipated exposure temperature. The exposure conditions, such as temperature and duration, are noted where available for convenience.
Chemical Compatibility Table
This table includes the most common chemicals encountered in EPS applications. For chemicals not listed here or for unknown mixtures, an EPS chemical compatibility test under simulated usage conditions is essential.
Download our full version of this table with complete details
| Chemical | Temperature (°F) | Time (Days) | Compatibility |
|---|---|---|---|
| Acetic Acid 5% | 77 | 365 | C |
| Acetic Acid 10% | 77 | 365 | LC |
| Acetic Acid 100% | 77 | 365 | NC |
| Acetone | – | – | NC |
| Acetophenone | – | – | NC |
| Adrenalin Hydrochloride | – | – | C |
| Aluminum Chloride (Sat.) | 122 | 365 | C |
| Ammonia | – | – | C |
| Amyl Alcohol | – | – | NC |
| Aniline | 68 | – | NC |
| Benzene | – | – | NC |
| Borax (Sat.) | 122 | 365 | C |
| Boric Acid | 122 | 365 | C |
| Butyl Alcohol n | – | – | C |
| Calcium Hypochloride 15% | – | – | LC |
| Citric Acid 10% | 77 | 365 | C |
| Coffee Solution | 122 | 365 | C |
| Cyclohexanol | 77 | 365 | C |
| Dichlorobenzene | – | – | NC |
| Ethyl Acetate 98% | – | – | NC |
| Ethyl Alcohol 95% | 77 | 365 | LC |
| Gasoline | – | – | NC |
| Hydrochloric Acid 10% | 77 | 365 | C |
| Hydrogen Peroxide 30% | – | – | C |
| Isopropyl Alcohol | 77 | 365 | LC |
| Milk | 77 | 14 | C |
| Mineral Oil | – | – | C |
| Phosphoric Acid 50% | 122 | 365 | C |
| Potassium Hydroxide 30% | 77 | 365 | C |
| Propylene Glycol | 122 | 365 | C |
| Sodium Acetate (Sat.) | 122 | 365 | C |
| Sucrose 30% | – | – | C |
| Sulfuric Acid 50% | – | – | C |
| Vegetable Oils | 68 | – | LC to C |
| Water | – | – | C |
| Xylene | – | – | NC |