At a glance
Ratings at 20 °C.
- Rated A, very good resistance
- PTFE, PVDF, Viton (FPM), SS 316, SS 304, FEP (6)
- Rated B, good resistance
- none (0)
- Rated C, limited resistance
- Aluminium (1)
- Rated D, not resistant
- HDPE, PP, PVC Rigid, EPDM, NBR, LDPE, Nylon (PA), Acetal (POM), Polycarbonate, PVC Flexible, Polystyrene, Polysulfone, PETG, PMP, SAN (15)
- No data in the source
- ECTFE/ETFE, Silicone
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
No material with a rating at both temperatures changes grade between 20 °C and 50 °C.
Substance
- CAS number
- 7782-50-5
- Formula
- Cl2
- Hazard symbols in the source
- T (toxic) (pre-GHS European symbols; check the current safety data sheet)
- Name in the source (German)
- Chlorgas
Resistance table
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | D | D | |
| LDPE | D | D | |
| PP | D | D | |
| PVC Rigid | D | D | |
| PVC Flexible | D | D | |
| PMP | D | D | |
| Polystyrene | D | D | |
| SAN | D | D | |
| Polycarbonate | D | D | |
| PETG | D | D | |
| Acetal (POM) | D | D | |
| Nylon (PA) | D | D | |
| Polysulfone | D | D | |
| Fluoropolymers | |||
| PTFE | A | – | |
| FEP | A | A | |
| PVDF | A | A | |
| Elastomers | |||
| EPDM | D | D | |
| Viton (FPM) | A | A | |
| NBR | D | D | |
| Metals | |||
| SS 316 | A | – | |
| SS 304 | A | – | |
| Aluminium | C* | – | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: ECTFE/ETFE, 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 Chlorine Gas at high concentrations?
The materials with an A rating (resistant) for Chlorine Gas at 20 °C are: PTFE, PVDF, Viton (FPM), SS 316, SS 304, FEP. These can generally be used in direct contact.
Which materials should be avoided with Chlorine Gas?
Materials rated D (not resistant) for Chlorine Gas are: HDPE, PP, PVC Rigid, EPDM, NBR, LDPE, Nylon (PA), Acetal (POM). These should not be used in contact with Chlorine Gas.
Does temperature affect chemical resistance to Chlorine Gas?
For Chlorine Gas, all tested materials maintain the same rating at both 20 °C and 50 °C.
Is PTFE safe for Chlorine Gas?
PTFE is rated A for Chlorine Gas 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.