Chemical Resistance
PTFE Chemical Resistance Chart
- Chemical Resistance of PTFE to Common Solvents
Solvent Exposure Temp., C Exposure Time Weight Gain,% Acetone 20 12 mo 0.3 50 12 mo 0.4 70 2 wk 0 Benzene 78 96 hr 0.5 100 8 hr 0.6 200 8 hr 1.0 Carbon Tetrachloride 25 12 mo 0.6 50 12 mo 1.6 70 2 wk 1.9 100 8 hr 2.5 200 8 hr 3.7 Ethanol (95%) 25 12 mo 0 50 12 mo 0 70 2 wk 0 100 8 hr 0.1 200 8 hr 0.3 Ethyl Acetate 25 12 mo 0.5 50 12 mo 0.7 70 2 wk 0.7 Toluene 25 12 mo 0.3 50 12 mo 0.6 70 2 wk 0.6 - Chemical Resistance of PTFE to Common Acids & Bases
Reagent Exposure Temp., C Exposure Time Weight Gain,% Hydrochloric Acid 10% 25 12 mo. 0 10% 50 12 mo. 0 10% 70 12 mo. 0 20% 100 8 hr 0 20% 200 8 hr 0 Nitric Acid 10% 25 12 mo. 0 10% 70 12 mo. 0.1 Sulfuric Acid 30% 25 12 mo. 0 30% 70 12 mo. 0 30% 100 8 hr 0 30% 200 8 hr 0.1 Sodium Hydroxide 10% 25 12 mo. 0 10% 70 12 mo. 0.1 50% 100 8 hr 0 50% 200 8 hr 0 Ammonium Hydroxide 10% 25 12 mo. 0 10% 70 12 mo. 0.1 - Chemical Compatibility of PTFE with Halogenated Chemicals
Chemical Effect on PTFE Sample Chloroform Wets, insoluble at boiling point Ethylene Bromide 0.3%weight gain after 24 hr at 100 C Fluorinated Hydrocarbons Wets, swelling occurs in boiling solvent Fluoro-naphthalene Insoluble at boiling point, some swelling Fluronitrobenzene Insoluble at boiling point, some swelling Pentachlorobenzamide insoluble Perfluoroxylene Insoluble at boiling point, slight swelling Tetrabromoethane Insoluble at boiling point Tetrachloroetylene Wets, some swelling after 2 hr at 120 C Trichloroacetic Acid Insoluble at boiling point Trichloroethylene Insoluble at boiling point after 1 hr
PFA Chemical Resistance Chart
- Effect on PFA of Immersion in Inorganic Chemicals for 168 Hours
Reagent Exposure Temperature, C Tensile Strength Retained,% Elongation Retained % Weight Gain, % Acids: Hydrochloric (conc.) 120 98 100 0 Sulfuric (conc.) 120 95 98 0 Hydrofluoric (60%) 23 99 99 0 Fuming Sulfuric 23 95 96 0 Oxidizing Acids: Aqua Regia 120 99 100 0 Chromic (50%) 120 93 97 0 Nitric (conc.) 120 95 98 0 Fuming Nitric 23 99 99 0 Bases: Ammonium Hydroxide (conc.) 66 98 100 0 Sodium Hydroxide (conc.) 120 93 99 0.4 Peroxide: Hydrogen Peroxide (30%) 23 93 95 0 Halogens: Bromine 23 99 100 0.5 Bromine 59 95 95 - Chlorine 120 92 100 0.5 Metal Salt Solutions: Ferric Chloride 100 93 98 0 Zinc Chloride (25%) 100 96 100 0 Miscellaneous: Sulfuric Chloride 69 83 100 2.7 Chlorosulfonic Acid 151 91 100 0.7 Phosphoric Acid (conc.) 100 93 100 0 - Effect on PFA of Immersion in Inorganic Chemicals for 168 Hours
Reagent Exposure Temperature, C Tensile Strength Retained,% Elongation Retained % Weight Gain, % Acids/Anhydrides: Glacial Acetic Acid 118 95 100 0.4 Acetic Anhydride 139 91 99 0.3 Trichloroacetic Acid 196 90 100 2.2 Hydrocarbons: Isooctane 99 94 100 0.7 Naphtha 100 91 100 0.5 Mineral Oil 180 87 95 0 Toluene 110 88 100 0.7 Aromatic: O-Cresol 191 92 96 0.2 Nitrobenzene 210 90 100 0.7 Alcohol: Benzyl Alcohol 205 93 99 0.3 Ether: Tetrehydrofuran 66 88 100 0.7 Amine: Aniline 185 94 100 0.3 n-Butylamine 78 86 97 0.4 Ethylenediamine 117 96 100 0.1 Aldehyde: Benzaldehyde 179 90 99 0.5 Ketone: Cyclohexanone 156 92 100 0.4 Methyl Ethyl Ketone 80 90 100 0.4 Acetophenone 202 90 100 0.6 Esters: Dimethylphthalate 220 98 100 0.3 n-Butylcetate 125 93 100 0.5 Tri-n-Butylphosphate 200 91 100 2.0 Chlorinated Solvents: Methylene Chliride 40 94 100 0.8 Perchloroethylene 121 86 100 2.0 Carbon 77 87 100 2.3 Tetrachloride Polar Soivents: Dimethylformamide 154 96 100 0.2 Dimethylsulfoxide 189 95 100 0.1 Dioxane 101 92 100 0.6
FEP Chemical Resistance Chart
- Chemical Resistance of FEP to Common Solvent
Solvent Exposure Temperature, C Exposure Time Weight Gain,% Acetone 20 12 mo 0.3 50 12 mo 0.4 70 2 wk 0 Benzene 78 96 hr 0.5 100 8 hr 0.6 200 8 hr 1.0 Carbon Tetrachloride 25 12 mo 0.6 50 12 mo 1.6 70 2 wk 1.9 100 8 hr 2.5 200 8 hr 3.7 Ethanol (95%) 25 12 mo 0 50 12 mo 0 70 2 wk 0 100 8 hr 0.1 200 8 hr 0.3 Ethyl Acetate 25 12 mo 0.5 50 12 mo 0.7 70 2 wk 0.7 Toluene 25 12 mo 0.3 50 12 mo 0.6 70 2 wk 0.6 - Chemical Resistance of FEP to Common Acids & Bases
Reagent Concentration Exposure Temperature, C Exposure Time Weight Gain,% Hydrochloric Acid 10% 25 12 mo 0 10% 50 12 mo 0 10% 70 12 mo 0 20% 100 8 hr 0 20% 200 8 hr 0 Nitric Acid 10% 25 12 mo 0 10% 70 12 mo 0.1 Sulfuric Acid 30% 25 12 mo 0 30% 70 12 mo 0 30% 100 8 hr 0 30% 200 8 hr 0.1 Sodium Hydroxide 10% 25 12 mo 0 10% 70 12 mo 0.1 50% 100 8 hr 0 50% 200 8 hr 0 Ammonium Hydroxide 10% 25 12 mo 1 10% 70 12 mo 0.1 - Chemical Compatibility of FEP Halogenated Solvents
Chemical Effect on Polymer Sample Chloroform Wets, Insoluble at boiling Point Ethylene Bromide 0.3% weight gain after 24 hr at 100 C Fluorinated Hydrocarbons Wets, swelling occurs in boiling solvent Fluoro-naphthalene Insoluble at boiling point, some swelling Fluoronitrobezene Insoluble at boiling point, some swelling Pentachlorobenzamide Insoluble Perfluoroxylene Insoluble at boiling point, slight swelling Tetrabromoethane Insoluble at boiling point Tetrachlorothylene Wets, some swelling after 2 hr at 120 C Trichloroacetic Acid Insoluble at boiling point Trichloroethylene Insoluble at boiling point after 1HR - Chemical Compatibility of FEP with Various Chemicals
Chemical Effect on Polymer Sample Abietic Acid Insoluble at boiling point Acetic Acid Wets Acetophenone Insoluble -0.2% weight gain after 24 hr at 150 C Acrylic Anhydride No effect at room temperature Allyl Acetate No effect at room temperature Allyl Methacrylate No effect at room temperature Aluminium Chloride Insoluble in solution with NaCL; 1%-5% anhydrous ALCL3 affects mechanical properties Ammonium Chloride Insoluble at boiling point Aniline Insoluble-0.3% weight gain after 24 hr at 150 C Borax No wetting or effect by 5% solution Boric Acid Insoluble at boiling point Butyl Acetate Insoluble at boiling point Butyl Methacrylate No effect at room temperature Calcium Chloride No effect by saturated solution in methanol Carbon Disulfide Insoluble at boiling point Cetane Wets, insoluble at boiling point Chromic Acid Insoluble at boiling point Cyclohexanone No effect observed - Chemical Compatibility of FEP with Various Chemicals
Chemical Effect on Polymer Sample Dibutyl Phthalate Wets, no effect at 250 C Diethyl Carbonate No effect at the room temperature Dimethyl Ether No effect observed Dimethyl Formamide No effect observed Ethyl Ether Wets,no effect at 250 C Ethylene Glycol Insoluble at boiling point Ferric Chloride 1%-5%FeCL3.6H2O reduces mechanical properties Ferric Phosphate No effect by 5% solution Formaldehyde Insoluble at boiling point after 2 hr Forme Acid Insoluble at boiling point Hexane Wets Hydrogen Fluoride Wets, no effect 100% HF at the room temperature Lead No effect Magnesium Chloride Insoluble at boiling point Mercury Insoluble at boiling point Methacrylic Acid No effect at the room temperature Methanol Wets Methyl Methacrylate Wets above melting point Naphthalene No effect Nitrobenzene No effect 2-Nitro-Butanol No effect Nitromethane No effect 2-Nitro-2-Methyl Propanol No effect n-Octadecyl Alcohol Wets Phenol Insoluble at boiling point Phthalic Acid Wets Pinene Wets, Insoluble at boiling point Piperidene No effect 0.3%-0.5%weight gain after 24 hr at 106 C Polyacrylonitrile No effect Potassium Acetate Insoluble at boiling point Pyridine No effect Stannous Chloride No effect at Melting point (246C) Sulfur No effect at 445 C Triethanolamine Wets, no effect Vinyl Methacrylate No effect at the room temperature Water Insoluble at boiling point Xylene 0.4%weight gain after 48 hr at 137 C Zinc Chloride No effect at Melting point (260 C)
