Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| liquid | B* | – | |
| gaseous | B* | – |
* estimated rating, given in the source without a temperature
Material comparison at 20 °C
Resistance overview
Acetal (POM) maintains a consistent rating of B across all 2 tested concentrations (liquid, gaseous) of Phosgene 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
Phosgene is commonly encountered in surface cleaning and chemical processing. Acetal (POM) (Polyoxymethylene (acetal)) is a thermoplastic typically used for tanks, piping, containers and liners. Because Phosgene is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.
Practical recommendation
Acetal (POM) is suitable for use with Phosgene 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 Nylon (PA), FEP, PTFE instead, which are rated A for this chemical.
Did you know?
Polyoxymethylene (acetal) is commonly chosen for tanks, piping, containers and liners because of its combination of chemical resistance, mechanical strength, and cost-effectiveness.
Materials rated A or B at 20 °C
Based on the row for gaseous, 20 °C.
- Thermoplastics
- Nylon (PA) A
- Fluoropolymers
- PTFE A, FEP A
About Acetal (POM)
Acetal (POM) resists many organic solvents and fuels. Strong acids and oxidising agents degrade 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.