Compatibility Rating
Why is HDPE resistant to Propylene Glycol?
HDPE shows excellent resistance to Propylene Glycol due to its tightly packed molecular structure and chemical inertness to most acids, bases, and salts.
⚠️ When NOT to use HDPE
Avoid using High-Density Polyethylene with strong oxidizing acids (nitric, chromic), chlorinated solvents, and aromatic hydrocarbons. Maximum service temperature is around 80°C.
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 80°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: PP (higher temp) or PTFE (universal). View all materials for Propylene Glycol →
FAQ
Is HDPE resistant to Propylene Glycol?
HDPE has Excellent (A) resistance to Propylene Glycol at 20°C. Excellent resistance - recommended for continuous use.
Can I store Propylene Glycol in HDPE containers?
Yes, HDPE is rated A (Excellent) for Propylene Glycol.