Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| moist | B | B | |
| liquid | B | B |
Material comparison at 20 °C
Resistance overview
Polysulfone maintains a consistent rating of B across all 2 tested concentrations (moist, liquid) of Sulfur Dioxide at 20 °C. The fact that the rating does not change with concentration within the tested range simplifies material selection, though the boundary conditions beyond this range remain untested. The rating remains stable between 20 °C and 50 °C, which means this material can also handle moderately elevated process temperatures without additional risk.
Application context
Sulfur Dioxide is commonly encountered in laboratory work and chemical processing. Polysulfone (Polysulfone) is a thermoplastic typically used for tanks, piping, containers and liners. Because Sulfur Dioxide is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.
Practical recommendation
Polysulfone is suitable for use with Sulfur Dioxide under normal conditions, but some minor effects on the material are expected over time. Periodic monitoring for swelling, softening, or weight change is recommended, especially for long-service components. For safety-critical or long-life applications, consider HDPE, LDPE, PMP instead, which are rated A for this chemical.
Did you know?
In industrial practice, Polysulfone components exposed to Sulfur Dioxide are typically inspected for swelling, discoloration, or loss of mechanical strength as early indicators of chemical attack.
Materials rated A or B at 20 °C
Based on the row for moist, 20 °C.
- Thermoplastics
- HDPE A, PP A, PVC Rigid A, LDPE A, PMP A
- Fluoropolymers
- PTFE A, PVDF A, FEP A, ECTFE/ETFE A
- Elastomers
- EPDM A
- Metals
- SS 316 A, SS 304 A
About Polysulfone
Polysulfone withstands hot water and steam. Ketones, esters and chlorinated and aromatic solvents attack it.
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.