Compatibility Rating
📊 Note: Chromic Acid resistance varies by concentration. Data available for: 10 %, 20 %, 50 %. Search for specific concentrations →
Why is FEP resistant to Chromic Acid?
FEP shows excellent resistance to Chromic Acid due to its fully fluorinated structure similar to PTFE, offering near-universal chemical resistance.
⚠️ When NOT to use FEP
Avoid using FEP (Fluorinated Ethylene Propylene) with molten alkali metals and fluorine gas. Suitable up to 200°C.
Comparison Table — All Materials for Chromic Acid
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | C | D |
| LDPE | C | D |
| PP | C | C |
| PTFE | A | A |
| PVDF | A | A |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | D | D |
| Viton (FPM) | A | NR |
| NBR | D | D |
| Silicone | NR | NR |
| SS 316 | B | C |
| SS 304 | B | C |
| Aluminium | C | C |
| PVC Rigid | A | C |
| PVC Flexible | A | NR |
| PMP | B | C |
| Polystyrene | C | C |
| SAN | C | C |
| Polycarbonate | C | D |
| PETG | D | D |
| Acetal (POM) | D | D |
| Nylon (PA) | D | D |
| Polysulfone | D | D |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Good resistance at both 20°C and 50°C. Maximum service temperature for this material is 200°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: PTFE for higher temps. View all materials for Chromic Acid →
FAQ
Is FEP resistant to Chromic Acid?
FEP has Excellent (A) resistance to Chromic Acid at 20°C.
Can I store Chromic Acid in FEP?
Yes, FEP is rated A for Chromic Acid.
📊 Note: Chromic Acid resistance varies by concentration. Data available for: 10 %, 20 %, 50 %. Search for specific concentrations →