Compatibility Rating
Why is PVDF resistant to Sodium Hydroxide Caustic Soda?
PVDF shows good resistance to Sodium Hydroxide Caustic Soda due to its fluorinated polymer backbone providing excellent resistance to acids, bases, and organic solvents.
⚠️ When NOT to use PVDF
Avoid using Polyvinylidene Fluoride with strong bases (NaOH >10%), ketones, esters, and amines. Service temperature up to 150°C.
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
Good resistance at both 20°C and 50°C. Maximum service temperature for this material is 150°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: PTFE for broader resistance. View all materials for Sodium Hydroxide Caustic Soda →
FAQ
Is PVDF resistant to Sodium Hydroxide (Caustic Soda)?
PVDF has Good (B) resistance to Sodium Hydroxide (Caustic Soda) at 20°C. Good resistance - suitable for intermittent contact.
Can I store Sodium Hydroxide (Caustic Soda) in PVDF containers?
Yes, PVDF is rated B (Good) for Sodium Hydroxide (Caustic Soda) at room temperature.