Compatibility Rating
📊 Note: Hydrochloric Acid resistance varies by concentration. Data available for: 1-5 %, 20 %, 35 %. Search for specific concentrations →
Why is PP resistant to Hydrochloric Acid?
PP shows excellent resistance to Hydrochloric Acid due to its semi-crystalline structure providing good chemical resistance to acids, bases, and organic solvents at moderate concentrations.
⚠️ When NOT to use PP
Avoid using Polypropylene with concentrated oxidizing acids, chlorinated solvents, and aromatic hydrocarbons. Becomes brittle below 0°C.
Comparison Table — All Materials for Hydrochloric Acid
| 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 | D | D |
| Silicone | NR | NR |
| SS 316 | D | D |
| SS 304 | D | D |
| Aluminium | D | D |
| PVC Rigid | A | C |
| PVC Flexible | NR | NR |
| PMP | A | B |
| Polystyrene | A | A |
| SAN | NR | NR |
| Polycarbonate | B | C |
| PETG | C | NR |
| Acetal (POM) | D | D |
| Nylon (PA) | D | D |
| Polysulfone | A | A |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
FAQ
Is Polypropylene (PP) resistant to Hydrochloric Acid?
Polypropylene (PP) has Excellent (A) resistance to Hydrochloric Acid at 20°C.
Can I store Hydrochloric Acid in Polypropylene (PP)?
Yes, Polypropylene (PP) is rated A for Hydrochloric Acid.
📊 Note: Hydrochloric Acid resistance varies by concentration. Data available for: 1-5 %, 20 %, 35 %. Search for specific concentrations →