Compatibility Rating
At 20°C (68°F)
Excellent
Excellent resistance - recommended for continuous use
At 50°C (122°F)
Poor
Not recommended - significant degradation expected
Why is PVC Rigid resistant to Phthalic Acid?
PVC Rigid shows excellent resistance to Phthalic Acid due to its chlorinated structure providing resistance to acids, alkalis, and many inorganic chemicals.
⚠️ When NOT to use PVC Rigid
Avoid using PVC (Rigid) with ketones, esters, aromatic and chlorinated solvents. Maximum temperature around 60°C.
Comparison Table — All Materials for Phthalic Acid
| 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 | NR | NR |
| EPDM | A | NR |
| Viton (FPM) | B | C |
| NBR | D | D |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | A |
| PVC Rigid | A | D |
| PVC Flexible | NR | NR |
| PMP | NR | NR |
| Polystyrene | A | NR |
| SAN | A | A |
| Polycarbonate | C | C |
| PETG | A | NR |
| Acetal (POM) | A | NR |
| Nylon (PA) | C | C |
| Polysulfone | NR | NR |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Performance degrades significantly at higher temperatures — rated Excellent at 20°C but only Poor at 50°C. For elevated temperatures, consider a more resistant material. Max service temp: 60°C.
🔄 Better Alternative?
Consider: PP or PVDF for higher temperatures. View all materials for Phthalic Acid →
FAQ
Is PVC Rigid resistant to Phthalic Acid?
PVC Rigid has Excellent (A) resistance to Phthalic Acid at 20°C. Excellent resistance - recommended for continuous use.