Compatibility Rating
At 20°C (68°F)
Excellent
Excellent resistance - recommended for continuous use
At 50°C (122°F)
Good
Good resistance - suitable for intermittent contact
Why is PVC Rigid resistant to Sulfur Dioxide?
PVC Rigid shows excellent resistance to Sulfur Dioxide 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 Sulfur Dioxide
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | C |
| PTFE | A | A |
| PVDF | A | D |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | A | NR |
| Viton (FPM) | D | D |
| NBR | D | D |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | C | D |
| PVC Rigid | A | B |
| PVC Flexible | NR | NR |
| PMP | A | A |
| Polystyrene | C | D |
| SAN | NR | NR |
| Polycarbonate | C | C |
| PETG | NR | NR |
| Acetal (POM) | D | D |
| Nylon (PA) | C | C |
| Polysulfone | B | B |
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 60°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: PP or PVDF for higher temperatures. View all materials for Sulfur Dioxide →
FAQ
Is PVC Rigid resistant to Sulfur Dioxide?
PVC Rigid has Excellent (A) resistance to Sulfur Dioxide at 20°C. Excellent resistance - recommended for continuous use.
Can I store Sulfur Dioxide in PVC Rigid containers?
Yes, PVC Rigid is rated A (Excellent) for Sulfur Dioxide.