At a glance
Based on the row for technical grade, 20 °C.
- Rated A, very good resistance
- PTFE, HDPE, PP, PVDF, EPDM, SS 316, SS 304, Aluminium, FEP (9)
- Rated B, good resistance
- Nylon (PA), Acetal (POM) (2)
- Rated C, limited resistance
- Viton (FPM) (1)
- Rated D, not resistant
- PVC Rigid, NBR, Polycarbonate, PMP (4)
- No data in the source
- LDPE, ECTFE/ETFE, Silicone, PVC Flexible, Polystyrene, Polysulfone, PETG, SAN
- Rated lower at 50 °C than at 20 °C
- PVDF (A → C)
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
- 4170-30-3
- Formula
- C4H6O
- Hazard symbols in the source
- F (flammable), T (toxic) (pre-GHS European symbols; check the current safety data sheet)
- Flammable
- yes
- Concentrations listed
- technical grade
- Also listed as
- trans-2-Butenal (Crotonaldehyde); Methacrolein
- Name in the source (German)
- Crotonaldehyd
Resistance table: Crotonaldehyde, technical grade
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | – | |
| PP | A | – | |
| PVC Rigid | D | D | |
| PMP | D* | – | |
| Polycarbonate | D* | – | |
| Acetal (POM) | B* | – | |
| Nylon (PA) | B* | – | |
| Fluoropolymers | |||
| PTFE | A | – | |
| FEP | A* | – | |
| PVDF | A | C | |
| Elastomers | |||
| EPDM | A | – | |
| Viton (FPM) | C | – | |
| NBR | D | D | |
| Metals | |||
| SS 316 | A | A | |
| SS 304 | A | A | |
| Aluminium | A | – | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: LDPE, PVC Flexible, Polystyrene, SAN, PETG, Polysulfone, 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 Crotonaldehyde at high concentrations?
The materials with an A rating (resistant) for Crotonaldehyde at 20 °C are: PTFE, HDPE, PP, PVDF, EPDM, SS 316, SS 304, Aluminium. These can generally be used in direct contact.
Which materials should be avoided with Crotonaldehyde?
Materials rated D (not resistant) for Crotonaldehyde are: PVC Rigid, NBR, Polycarbonate, PMP. These should not be used in contact with Crotonaldehyde.
Does temperature affect chemical resistance to Crotonaldehyde?
Yes. 1 of 5 tested materials show a worse rating at 50 °C than at 20 °C for Crotonaldehyde. Materials affected include: PVDF.
Is PTFE safe for Crotonaldehyde?
PTFE is rated A for Crotonaldehyde 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.