Compatibility Rating
Why is PTFE resistant to Acetaldehyde?
PTFE shows excellent resistance to Acetaldehyde 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 Acetaldehyde
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | C | C |
| LDPE | B | D |
| PP | C | D |
| PTFE | A | A |
| PVDF | D | D |
| FEP | A | A |
| ECTFE/ETFE | B | C |
| EPDM | C | NR |
| Viton (FPM) | D | D |
| NBR | D | D |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | A |
| PVC Rigid | D | D |
| PVC Flexible | NR | NR |
| PMP | B | D |
| Polystyrene | D | D |
| SAN | D | D |
| Polycarbonate | D | D |
| PETG | D | D |
| Acetal (POM) | B | NR |
| Nylon (PA) | B | NR |
| 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 Acetaldehyde →
FAQ
Is PTFE resistant to Acetaldehyde?
PTFE has Excellent (A) resistance to Acetaldehyde at 20°C. Excellent resistance - recommended for continuous use.
Can I store Acetaldehyde in PTFE containers?
Yes, PTFE is rated A (Excellent) for Acetaldehyde.