At a glance
Based on the row for technical grade, 20 °C.
- Rated A, very good resistance
- PTFE, Nylon (PA), Acetal (POM), Polysulfone (4)
- Rated B, good resistance
- PVC Rigid (1)
- Rated C, limited resistance
- PVDF, EPDM, Viton (FPM), NBR, Aluminium, LDPE, FEP, SAN (8)
- Rated D, not resistant
- HDPE, PP, Polycarbonate, PVC Flexible, Polystyrene (5)
- No data in the source
- SS 316, SS 304, ECTFE/ETFE, Silicone, PETG, PMP
- Rated lower at 50 °C than at 20 °C
- PVDF (C → D), LDPE (C → D)
Based on the row for technical grade, 20 °C.
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 75-71-8
- Formula
- CCl2F2
- Hazard symbols in the source
- N (dangerous for the environment) (pre-GHS European symbols; check the current safety data sheet)
- Concentrations listed
- technical grade; concentration not stated
- Also listed as
- Freon 12 (R-12); Freon 12 (CFC-12); Frigen 12 (CFC-12)
- Name in the source (German)
- Dichlordifluormethan
Rating by concentration
Show as a table
| Material | technical grade | concentration not stated |
|---|---|---|
| Thermoplastics | ||
| HDPE | D | D |
| LDPE | C | C |
| PP | D | D |
| PVC Rigid | B | B |
| PVC Flexible | D | D |
| PMP | – | – |
| Polystyrene | D | D |
| SAN | C | C |
| Polycarbonate | D | D |
| PETG | – | – |
| Acetal (POM) | A | A |
| Nylon (PA) | A | A |
| Polysulfone | A | A |
| Fluoropolymers | ||
| PTFE | A | A |
| FEP | C | C |
| PVDF | C | C |
| ECTFE/ETFE | – | – |
| Elastomers | ||
| EPDM | C | C |
| Viton (FPM) | C | C |
| NBR | C | C |
| Silicone | – | – |
| Metals | ||
| SS 316 | – | – |
| SS 304 | – | – |
| Aluminium | C* | C* |
* estimated rating, given in the source without a temperature
Resistance table: Dichlorodifluoromethane (R-12), technical grade
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | D | D | |
| LDPE | C | D | |
| PP | D | D | |
| PVC Rigid | B | – | |
| PVC Flexible | D | D | |
| Polystyrene | D | D | |
| SAN | C | C | |
| Polycarbonate | D | D | |
| Acetal (POM) | A | – | |
| Nylon (PA) | A | – | |
| Polysulfone | A | – | |
| Fluoropolymers | |||
| PTFE | A | – | |
| FEP | C | C | |
| PVDF | C | D | |
| Elastomers | |||
| EPDM | C | – | |
| Viton (FPM) | C | – | |
| NBR | C | C | |
| Metals | |||
| Aluminium | C* | – | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PMP, PETG, ECTFE/ETFE, Silicone, SS 316, SS 304
Resistance table: Dichlorodifluoromethane (R-12), concentration not stated
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | D | D | |
| LDPE | C | D | |
| PP | D | D | |
| PVC Rigid | B | – | |
| PVC Flexible | D | D | |
| Polystyrene | D | D | |
| SAN | C | C | |
| Polycarbonate | D | D | |
| Acetal (POM) | A | – | |
| Nylon (PA) | A | – | |
| Polysulfone | A | – | |
| Fluoropolymers | |||
| PTFE | A | – | |
| FEP | C | C | |
| PVDF | C | D | |
| Elastomers | |||
| EPDM | C | – | |
| Viton (FPM) | C | – | |
| NBR | C | C | |
| Metals | |||
| Aluminium | C* | – | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PMP, PETG, ECTFE/ETFE, Silicone, SS 316, SS 304
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 Dichlorodifluoromethane (R-12) at high concentrations?
The materials with an A rating (resistant) for Dichlorodifluoromethane (R-12) at 20 °C are: PTFE, Nylon (PA), Acetal (POM), Polysulfone. These can generally be used in direct contact.
Which materials should be avoided with Dichlorodifluoromethane (R-12)?
Materials rated D (not resistant) for Dichlorodifluoromethane (R-12) are: HDPE, PP, Polycarbonate, PVC Flexible, Polystyrene. These should not be used in contact with Dichlorodifluoromethane (R-12).
Does temperature affect chemical resistance to Dichlorodifluoromethane (R-12)?
Yes. 2 of 10 tested materials show a worse rating at 50 °C than at 20 °C for Dichlorodifluoromethane (R-12). Materials affected include: PVDF, LDPE.
Is PTFE safe for Dichlorodifluoromethane (R-12)?
PTFE is rated A for Dichlorodifluoromethane (R-12) at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
Does concentration affect chemical resistance to Dichlorodifluoromethane (R-12)?
Yes. Dichlorodifluoromethane (R-12) is tested at 2 concentrations (technical grade, concentration not stated). Some materials change their rating depending on the concentration.
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.