Compatibility Rating
📊 Note: Nitric Acid resistance varies by concentration. Data available for: 1-10 %, 100 %, 50 %, 66 %, 70 %. Search for specific concentrations →
Why is PTFE resistant to Nitric Acid?
PTFE shows excellent resistance to Nitric 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 Nitric Acid
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | B | D |
| LDPE | C | D |
| PP | D | D |
| PTFE | A | A |
| PVDF | A | A |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | D | D |
| Viton (FPM) | B | C |
| NBR | D | D |
| Silicone | NR | NR |
| SS 316 | A | B |
| SS 304 | A | B |
| Aluminium | D | D |
| PVC Rigid | C | D |
| PVC Flexible | NR | NR |
| PMP | B | C |
| Polystyrene | D | D |
| SAN | NR | NR |
| Polycarbonate | D | 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
FAQ
Is PTFE resistant to Nitric Acid?
PTFE has Excellent (A) resistance to Nitric Acid at 20°C.
Can I store Nitric Acid in PTFE?
Yes, PTFE is rated A for Nitric Acid.
📊 Note: Nitric Acid resistance varies by concentration. Data available for: 1-10 %, 100 %, 50 %, 66 %, 70 %. Search for specific concentrations →