Compatibility Rating
📊 Note: Chromic Acid resistance varies by concentration. Data available for: 10 %, 20 %, 50 %. Search for specific concentrations →
Why is PTFE resistant to Chromic Acid?
PTFE shows excellent resistance to Chromic Acid due to the extremely strong carbon-fluorine bonds making it virtually inert to almost all chemicals.
⚠️ When NOT to use PTFE
Avoid using PTFE (Teflon) with molten alkali metals, fluorine gas at high temperatures, and certain fluorinated compounds. It is the most chemically resistant plastic available.
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 260°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: None — PTFE is the gold standard. View all materials for Chromic Acid →
FAQ
Is PTFE resistant to Chromic Acid?
PTFE has Excellent (A) resistance to Chromic Acid at 20°C.
Can I store Chromic Acid in PTFE?
Yes, PTFE is rated A for Chromic Acid.
📊 Note: Chromic Acid resistance varies by concentration. Data available for: 10 %, 20 %, 50 %. Search for specific concentrations →