Thermoplastics: Chemical Resistance

The information below has been provided by our raw material suppliers.

Key:  1 = resistant • 2 = conditionally resistant • 3 = not resistant

Material HDPE LDPE PP Rigid PVC Flexible PVC PS POM PTFE PA6 PC
Cold water 1 1 1 1 1 1 1 1 1 1
Hot water 1 N/A 1 2 2 1 1 1 2 2
Water absorption (%)
ASTM D 570
<0.01 <0.01 0.01–0.03 0.04–0.4 0.15–0.75 0.03–0.1 0.22–0.25 0.0 1.3–1.9 0.1–0.2
Weak acids 1 1 1 1 1 1 2 1 3 1
Strong acids 1 2 2 1 3 2 3 1 3 2
Oxidising acids 3 3 3 2 3 3 3 1 3 2
Organic acids 1 1 2 2 2 2 1 1 2 2
Hydrofluoric acid 2 2 2 2 3 2 3 1 3 2
Strong alkalis 1 1 1 1 3 1 1 1 2 3
Weak alkalis 1 1 1 1 1 1 1 1 1 3
Dry halogens 3 3 2 2 3 3 3 1 3 1
Aliphatic hydrocarbons 1 1 1 1 3 3 1 1 1 1
Aromatic hydrocarbons 2 3 2 3 3 3 2 1 1 3
Chlorinated hydrocarbons 2 3 3 3 3 3 1 1 2 3
Unsaturated chlorinated hydrocarbons 3 3 3 3 3 3 1 1 2 3


Key:  1 = resistant • 2 = conditionally resistant • 3 = not resistant

Material HDPE LDPE PP Rigid PVC Flexible PVC PS POM PTFE PA6 PC
Ketones 1 2 2 3 3 3 2 1 1 2
Ethers 2 3 3 3 3 3 1 1 1 3
Aldehydes 2 N/A 1 3 1 3 2 1 2 3
Amines 1 N/A 1 2 1 1 2 1 1 3
Alcohols 1 2 1 1 3 1 1 1 1 2
Esters 1 2 2 3 3 3 3 1 1 2
Inorganic salt solutions 1 1 1 1 1 1 1 1 1 2
Mineral oil 1 2 1 1 2 2 1 1 1 1
Fuels 2 3 2 3 3 3 1 1 1 2
Greases, oils 1 2 1 1 2 1 1 1 3 1
Turpentine 3 3 3 3 3 3 2 1 2 1


Abbreviations:  HC = hydrocarbons • inorg. = inorganic • unsat. = unsaturated • chlor. = chlorinated

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