Compatibility Rating
At 20°C (68°F)
Fair
Limited resistance - short-term exposure only
At 50°C (122°F)
Fair
Limited resistance - short-term exposure only
Comparison Table — All Materials for Sodium Hydroxide Caustic Soda
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | A |
| PTFE | A | A |
| PVDF | B | B |
| FEP | NR | NR |
| ECTFE/ETFE | NR | NR |
| EPDM | A | NR |
| Viton (FPM) | D | D |
| NBR | C | D |
| Silicone | NR | NR |
| SS 316 | B | B |
| SS 304 | B | B |
| Aluminium | D | D |
| PVC Rigid | NR | NR |
| PVC Flexible | NR | NR |
| PMP | NR | NR |
| Polystyrene | NR | NR |
| SAN | NR | NR |
| Polycarbonate | D | D |
| PETG | D | D |
| Acetal (POM) | C | C |
| Nylon (PA) | A | C |
| Polysulfone | NR | NR |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Maximum service temperature for this material is 90°C. Always verify compatibility at your specific operating conditions.
🔄 Better Alternative?
Consider: Nylon or PP. View all materials for Sodium Hydroxide Caustic Soda →
FAQ
Is Acetal (POM) resistant to Sodium Hydroxide (Caustic Soda)?
Acetal (POM) has Fair (C) resistance to Sodium Hydroxide (Caustic Soda) at 20°C. Limited resistance - short-term exposure only.
Can I store Sodium Hydroxide (Caustic Soda) in Acetal (POM) containers?
Use caution - Acetal (POM) is rated C (Fair) for Sodium Hydroxide (Caustic Soda) at room temperature.