Compatibility Rating
At 20°C (68°F)
Good
Good resistance - suitable for intermittent contact
At 50°C (122°F)
Good
Good resistance - suitable for intermittent contact
Why is PETG resistant to Propylene Glycol?
PETG shows good resistance to Propylene Glycol due to its glycol-modified polyester structure providing moderate chemical resistance.
⚠️ 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 Propylene Glycol
| 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 | A | A |
| EPDM | A | NR |
| Viton (FPM) | A | A |
| NBR | A | C |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | A |
| PVC Rigid | C | D |
| PVC Flexible | NR | NR |
| PMP | A | A |
| Polystyrene | A | A |
| SAN | A | A |
| Polycarbonate | B | C |
| PETG | B | B |
| Acetal (POM) | A | NR |
| Nylon (PA) | D | D |
| 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 70°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: Polycarbonate or PP. View all materials for Propylene Glycol →
FAQ
Is PETG resistant to Propylene Glycol?
PETG has Good (B) resistance to Propylene Glycol at 20°C. Good resistance - suitable for intermittent contact.
Can I store Propylene Glycol in PETG containers?
Yes, PETG is rated B (Good) for Propylene Glycol.