At a glance
Based on the row for 32 %, 20 °C.
- Rated A, very good resistance
- PTFE, HDPE, PP, PVDF, PVC Rigid, SS 316, LDPE, FEP, ECTFE/ETFE, Polycarbonate (10)
- Rated B, good resistance
- Viton (FPM), SS 304 (2)
- Rated C, limited resistance
- EPDM, NBR (2)
- Rated D, not resistant
- Aluminium, Nylon (PA), Acetal (POM), PETG (4)
- No data in the source
- Silicone, PVC Flexible, Polystyrene, Polysulfone, PMP, SAN
- Rated lower at 50 °C than at 20 °C
- NBR (C → D)
Based on the row for 32 %, 20 °C.
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 16961-83-4
- Formula
- H2SiF6
- Hazard symbols in the source
- C (corrosive) (pre-GHS European symbols; check the current safety data sheet)
- Concentrations listed
- 32 %
- Name in the source (German)
- Kieselfluorwasserstoffsäure
Resistance table: Fluorosilicic Acid, 32 %
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | A | |
| LDPE | A | A | |
| PP | A | A | |
| PVC Rigid | A | A | |
| Polycarbonate | A | – | |
| PETG | D | D | |
| Acetal (POM) | D | D | |
| Nylon (PA) | D | D | |
| Fluoropolymers | |||
| PTFE | A | A | |
| FEP | A | A | |
| PVDF | A | A | |
| ECTFE/ETFE | A | A | |
| Elastomers | |||
| EPDM | C | – | |
| Viton (FPM) | B | B | |
| NBR | C | D | |
| Metals | |||
| SS 316 | A | A | |
| SS 304 | B* | – | |
| Aluminium | D | D | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PVC Flexible, PMP, Polystyrene, SAN, Polysulfone, 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.
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.