Compatibility Rating
Why is PVC Rigid resistant to Sodium Sulfite?
PVC Rigid shows excellent resistance to Sodium Sulfite 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 Sodium Sulfite
| 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) | A | A |
| NBR | B | C |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | C |
| PVC Rigid | A | C |
| PVC Flexible | A | C |
| PMP | A | NR |
| Polystyrene | A | A |
| SAN | A | A |
| Polycarbonate | B | B |
| PETG | B | B |
| Acetal (POM) | A | A |
| Nylon (PA) | A | NR |
| 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 Fair 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 Sodium Sulfite →
FAQ
Is PVC Rigid resistant to Sodium Sulfite?
PVC Rigid has Excellent (A) resistance to Sodium Sulfite at 20°C. Excellent resistance - recommended for continuous use.
Can I store Sodium Sulfite in PVC Rigid containers?
Yes, PVC Rigid is rated A (Excellent) for Sodium Sulfite.