Compatibility Rating
At 20°C (68°F)
Poor
Not recommended - significant degradation expected
At 50°C (122°F)
Poor
Not recommended - significant degradation expected
Why is PETG rated this way to Sodium Hydroxide Caustic Soda?
PETG is not recommended for use with Sodium Hydroxide Caustic Soda. Significant degradation or failure is expected.
⚠️ When NOT to use PETG
Avoid using PETG with strong acids, alkalis, and most organic solvents. Better impact resistance than PET but lower chemical resistance.
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 70°C. Always verify compatibility at your specific operating conditions.
🔄 Better Alternative?
Consider: Polycarbonate or PP. View all materials for Sodium Hydroxide Caustic Soda →
FAQ
Is PETG resistant to Sodium Hydroxide (Caustic Soda)?
PETG has Poor (D) resistance to Sodium Hydroxide (Caustic Soda) at 20°C. Not recommended - significant degradation expected.
Can I store Sodium Hydroxide (Caustic Soda) in PETG containers?
Use caution - PETG is rated D (Poor) for Sodium Hydroxide (Caustic Soda) at room temperature.