Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| technical grade | A | – |
Material comparison at 20 °C
Resistance overview
PMP shows very good resistance (A) to Butane at technical grade at 20 °C, meaning the material remains essentially unaffected by this chemical under standard laboratory test conditions. 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
Butane is commonly encountered in coatings and paints and pharmaceutical manufacturing. PMP (Polymethylpentene (TPX)) is a thermoplastic typically used for tanks, piping, containers and liners. Since Butane is flammable, material selection must also consider the risk of static charge buildup and the need for proper grounding in storage and transfer systems.
Practical recommendation
PMP can be used with confidence for Butane containment and handling. The A rating indicates that the material shows no significant change in weight, dimensions, or mechanical properties after prolonged contact under test conditions. This holds true at both 20 °C and 50 °C, giving a good safety margin for typical process environments.
Did you know?
The chemical resistance of PMP depends not only on the chemical concentration but also on exposure time, mechanical stress, and the presence of other chemicals in the mixture.
Materials rated A or B at 20 °C
Based on the row for technical grade, 20 °C.
- Thermoplastics
- HDPE A, PP A, PVC Rigid A, LDPE A, Nylon (PA) A, Acetal (POM) B, Polycarbonate A, Polysulfone A, PETG A, SAN A
- Fluoropolymers
- PTFE A, PVDF A, FEP A
- Elastomers
- Viton (FPM) A, NBR A
- Metals
- SS 316 A, SS 304 A, Aluminium A
About PMP
Polymethylpentene (TPX) is a transparent polyolefin used for labware. It resists many acids and alkalis, while aromatic and chlorinated solvents and strong oxidisers 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.