At a glance
Ratings at 20 °C.
- Rated A, very good resistance
- PTFE, HDPE, PP, PVDF, EPDM, Viton (FPM), NBR, SS 316, SS 304, Aluminium, LDPE, FEP, ECTFE/ETFE, Acetal (POM), Polystyrene, PMP, SAN (17)
- Rated B, good resistance
- Polycarbonate, Polysulfone, PETG (3)
- Rated C, limited resistance
- PVC Rigid (1)
- Rated D, not resistant
- Nylon (PA) (1)
- No data in the source
- Silicone, PVC Flexible
- Rated lower at 50 °C than at 20 °C
- PVC Rigid (C → D), NBR (A → C), Polycarbonate (B → C)
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 57-55-6
- Formula
- C3H8O2
- Name in the source (German)
- Propylenglycol
Resistance table
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | A | |
| LDPE | A | A | |
| PP | A | A | |
| PVC Rigid | C | D | |
| PMP | A | A | |
| Polystyrene | A | A | |
| SAN | A | A | |
| Polycarbonate | B | C | |
| PETG | B* | – | |
| Acetal (POM) | A | – | |
| Nylon (PA) | D | D | |
| Polysulfone | B | B | |
| Fluoropolymers | |||
| PTFE | A | A | |
| FEP | A | A | |
| PVDF | A | A | |
| ECTFE/ETFE | A | A | |
| Elastomers | |||
| EPDM | A | – | |
| Viton (FPM) | A | A | |
| NBR | A | C | |
| Metals | |||
| SS 316 | A* | – | |
| SS 304 | A* | – | |
| Aluminium | A | A | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PVC Flexible, Silicone
Rating scale
- A very good resistance
- B good resistance
- C limited resistance
- D not resistant
- – no data
- K no general statement possible
A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.
Frequently Asked Questions
Which materials resist Propylene Glycol at high concentrations?
The materials with an A rating (resistant) for Propylene Glycol at 20 °C are: PTFE, HDPE, PP, PVDF, EPDM, Viton (FPM), NBR, SS 316. These can generally be used in direct contact.
Which materials should be avoided with Propylene Glycol?
Materials rated D (not resistant) for Propylene Glycol are: Nylon (PA). These should not be used in contact with Propylene Glycol.
Does temperature affect chemical resistance to Propylene Glycol?
Yes. 3 of 17 tested materials show a worse rating at 50 °C than at 20 °C for Propylene Glycol. Materials affected include: PVC Rigid, NBR, Polycarbonate.
Is PTFE safe for Propylene Glycol?
PTFE is rated A for Propylene Glycol at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
About this data
The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.
A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.
Chemicals with a similar resistance profile
Same 20 °C rating on the share of materials shown.