Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| 5 % | B | B | |
| 30 % | B | C | |
| concentration not stated | B | C |
Material comparison at 20 °C
Resistance overview
Polysulfone maintains a consistent rating of B across all 3 tested concentrations (5 %, 30 %) of Ammonium Hydroxide (Ammonia Solution) 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. However, at 50 °C the resistance rating drops, indicating that temperature must be factored into the design. For heated applications, additional testing under actual service conditions is strongly recommended.
Application context
Ammonium Hydroxide (Ammonia Solution) is commonly encountered in pulp and paper and water treatment. Polysulfone (Polysulfone) is a thermoplastic typically used for tanks, piping, containers and liners. Because Ammonium Hydroxide (Ammonia Solution) 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 Ammonium Hydroxide (Ammonia Solution) 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. Avoid prolonged exposure at elevated temperatures, as the resistance decreases further at 50 °C. For safety-critical or long-life applications, consider HDPE, LDPE, PMP instead, which are rated A for this chemical.
Did you know?
Temperature is often the deciding factor when selecting materials for Ammonium Hydroxide (Ammonia Solution): even materials rated A at 20 °C may lose performance at elevated temperatures.
Materials rated A or B at 20 °C
Based on the row for 30 %, 20 °C.
- Thermoplastics
- HDPE A, PP A, PVC Rigid A, LDPE A, Acetal (POM) A, Polystyrene B, PETG B, PMP A
- Fluoropolymers
- PTFE A, PVDF B, FEP A, ECTFE/ETFE A
- Elastomers
- EPDM A, NBR B
- Metals
- SS 316 A, SS 304 A, Aluminium 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.