Compatibility Rating
At 20°C (68°F)
Excellent
Excellent resistance - recommended for continuous use
At 50°C (122°F)
Excellent
Excellent resistance - recommended for continuous use
Why is PTFE resistant to Methanol?
PTFE shows excellent resistance to Methanol 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 Methanol
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | A |
| PTFE | A | A |
| PVDF | A | A |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | A | NR |
| Viton (FPM) | C | D |
| NBR | C | C |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | NR |
| PVC Rigid | A | C |
| PVC Flexible | C | C |
| PMP | A | A |
| Polystyrene | C | D |
| SAN | C | D |
| Polycarbonate | D | D |
| PETG | A | NR |
| Acetal (POM) | A | A |
| Nylon (PA) | B | NR |
| Polysulfone | C | C |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
FAQ
Is PTFE resistant to Methanol?
PTFE has Excellent (A) resistance to Methanol at 20°C. Excellent resistance - recommended for continuous use.
Can I store Methanol in PTFE containers?
Yes, PTFE is rated A (Excellent) for Methanol.