At a glance
Ratings at 20 °C.
- Rated A, very good resistance
- PTFE, PVDF, SS 316, SS 304, Aluminium, FEP, ECTFE/ETFE (7)
- Rated B, good resistance
- PVC Rigid, Polysulfone (2)
- Rated C, limited resistance
- HDPE, Viton (FPM), Nylon (PA) (3)
- Rated D, not resistant
- PP, EPDM, NBR, LDPE, Acetal (POM), Polycarbonate, PVC Flexible, Polystyrene, PMP, SAN (10)
- No data in the source
- Silicone, PETG
- Rated lower at 50 °C than at 20 °C
- HDPE (C → D), PVC Rigid (B → D), Viton (FPM) (C → D), SS 304 (A → B), Aluminium (A → B)
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 107-92-6
- Formula
- C4H8O2
- Hazard symbols in the source
- C (corrosive) (pre-GHS European symbols; check the current safety data sheet)
- Also listed as
- Butanoic acid
- Name in the source (German)
- Buttersäure
Resistance table
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | C | D | |
| LDPE | D | D | |
| PP | D | D | |
| PVC Rigid | B | D | |
| PVC Flexible | D | D | |
| PMP | D | D | |
| Polystyrene | D | D | |
| SAN | D | D | |
| Polycarbonate | D | D | |
| Acetal (POM) | D | D | |
| Nylon (PA) | C | C | |
| Polysulfone | B | B | |
| Fluoropolymers | |||
| PTFE | A | A | |
| FEP | A | A | |
| PVDF | A | A | |
| ECTFE/ETFE | A | A | |
| Elastomers | |||
| EPDM | D | D | |
| Viton (FPM) | C | D | |
| NBR | D | D | |
| Metals | |||
| SS 316 | A | A | |
| SS 304 | A | B | |
| Aluminium | A | B | |
Not rated in the source, so not in the table: PETG, 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 Butyric Acid at high concentrations?
The materials with an A rating (resistant) for Butyric Acid at 20 °C are: PTFE, PVDF, SS 316, SS 304, Aluminium, FEP, ECTFE/ETFE. These can generally be used in direct contact.
Which materials should be avoided with Butyric Acid?
Materials rated D (not resistant) for Butyric Acid are: PP, EPDM, NBR, LDPE, Acetal (POM), Polycarbonate, PVC Flexible, Polystyrene. These should not be used in contact with Butyric Acid.
Does temperature affect chemical resistance to Butyric Acid?
Yes. 5 of 22 tested materials show a worse rating at 50 °C than at 20 °C for Butyric Acid. Materials affected include: HDPE, PVC Rigid, Viton (FPM), SS 304, Aluminium.
Is PTFE safe for Butyric Acid?
PTFE is rated A for Butyric Acid 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.