ETFE has outstanding resistance to attack by chemicals and solvents that often cause rapid deterioration of other plastic materials. ETFE is inert to many strong mineral acids, inorganic bases, halogens, and metal salt solutions.
Carboxylic acids, anhydrides, aromatic and aliphatic hydrocarbons, alcohols, aldehydes, ketones, ethers, esters, chlorocarbons, and classic polymer solvents have little effect on ETFE. Under highly stressed conditions, some very low surface tension solvents tend to reduce the stress-crack resistance of the lower molecular weight products. Very strong oxidizing acids such as nitric, organic bases such as amines, and sulfonic acids at high concentrations and near their boiling points will affect ETFE to varying degrees.
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