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Chemical Compatibility – Fluoropolymer Liners


Entegris offers two fluoropolymer liners within the NOWPak® liner-based bottle and canister system. The T650 liner is a single-layer PTFE film welded to an injection molded natural virgin PFA fitment. The T420 liner is a two-ply PTFE film welded to an injection molded natural virgin PFA fitment. Fluoropolymers such as PTFE and PFA are excellent options when more aggressive chemicals are required for your application. 

These fluoropolymer materials offer superior levels of chemical compatibility versus other commonly used fluid handling polymers. This chemical compatibility list demonstrates a selection of these aggressive chemistries. It is a compilation from many sources and is intended to be a general guideline for materials selection and is not all-inclusive. For other chemicals not listed, contact Entegris for chemical compatibility support.


  Compatibility
Chemical PTFE PFA
Acetic acid (glacial) Excellent Excellent
Acetic anhydride Excellent Excellent
Acetone Excellent Excellent
Acetonitrile Excellent Excellent
Ammonium hydroxide Excellent Excellent
Aniline Excellent Excellent
Carbon tetracholoride Excellent Excellent
Chloroform Excellent Excellent
Dichloromethane Excellent Excellent
Diethylamine Excellent Excellent
Dimethyl sulfoxide Excellent Excellent
Dioxane Excellent Excellent
Ethanol Excellent Excellent
Ethyl acetate Excellent Excellent
Ethyl alcohol Excellent Excellent
Ethylene oxide Excellent Excellent
Glycine - HCl Excellent Excellent
Guanidine - HCl Excellent Excellent
Hexane Excellent Excellent
Hydrochloric acid Excellent Excellent

  Compatibility
Chemical PTFE PFA
Hydrofluoric acid
Excellent Excellent
Hydrogen peroxide
Excellent Excellent
Isopropyl alcohol
Excellent Excellent
Methanol
Excellent Excellent
Methyl ethyl ketone
Excellent Excellent
n-hexane
Excellent Excellent
Nitric acid
Excellent Excellent
Phenol
Excellent Excellent
Phosphate-buffered saline
Excellent Excellent
Phosphoric acid
Excellent Excellent
Polysorbate
Excellent Excellent
Potassium carbonate
Excellent Excellent
Sodium chloride
Excellent Excellent
Sodium hydroxide
Excellent Excellent
Sodium phosphate
Excellent Excellent
Sulfuric acid
Excellent Excellent
Tetrahydrofuran
Excellent Excellent
Toluene
Excellent Excellent
Tris HCl
Excellent Excellent
Xylene Excellent Excellent