At a glance
Ratings at 20 °C.
- Rated A, very good resistance
- PTFE, HDPE, PP, SS 316, SS 304, Aluminium, LDPE, FEP, Nylon (PA), Acetal (POM), PETG, PMP (12)
- Rated B, good resistance
- EPDM, ECTFE/ETFE (2)
- Rated C, limited resistance
- PVC Rigid (1)
- Rated D, not resistant
- PVDF, Viton (FPM), NBR, Polycarbonate, Polystyrene, Polysulfone, SAN (7)
- No data in the source
- Silicone, PVC Flexible
- Rated lower at 50 °C than at 20 °C
- PVC Rigid (C → D), LDPE (A → C), Acetal (POM) (A → B)
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 68-12-2
- Formula
- C3D7NO
- Hazard symbols in the source
- T (toxic) (pre-GHS European symbols; check the current safety data sheet)
- Name in the source (German)
- Dimethylformamid (DMF)
Resistance table
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | A | |
| LDPE | A | C | |
| PP | A | A | |
| PVC Rigid | C | D | |
| PMP | A | A | |
| Polystyrene | D | D | |
| SAN | D | D | |
| Polycarbonate | D | D | |
| PETG | A | – | |
| Acetal (POM) | A | B | disputed, see below |
| Nylon (PA) | A | – | |
| Polysulfone | D | D | |
| Fluoropolymers | |||
| PTFE | A | A | |
| FEP | A | A | |
| PVDF | D | D | |
| ECTFE/ETFE | B | B | |
| Elastomers | |||
| EPDM | B | – | |
| Viton (FPM) | D | D | |
| NBR | D | D | |
| Metals | |||
| SS 316 | A* | – | |
| SS 304 | A* | – | |
| Aluminium | 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.
Corrected and disputed values
- Acetal (POM) (concentration not stated): source value 1/2 kept, but other published charts rate it lower. Two charts that share one data set rate acetal D for dimethylformamide. [1] [2]
Source values use the scale 1 (very good) to 4 (not resistant); 1 = A, 4 = D.
Frequently Asked Questions
Which materials resist Dimethylformamide (DMF) at high concentrations?
The materials with an A rating (resistant) for Dimethylformamide (DMF) at 20 °C are: PTFE, HDPE, PP, SS 316, SS 304, Aluminium, LDPE, FEP. These can generally be used in direct contact.
Which materials should be avoided with Dimethylformamide (DMF)?
Materials rated D (not resistant) for Dimethylformamide (DMF) are: PVDF, Viton (FPM), NBR, Polycarbonate, Polystyrene, Polysulfone, SAN. These should not be used in contact with Dimethylformamide (DMF).
Does temperature affect chemical resistance to Dimethylformamide (DMF)?
Yes. 3 of 16 tested materials show a worse rating at 50 °C than at 20 °C for Dimethylformamide (DMF). Materials affected include: PVC Rigid, LDPE, Acetal (POM).
Is PTFE safe for Dimethylformamide (DMF)?
PTFE is rated A for Dimethylformamide (DMF) 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.