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Chemical Resistance

PTFE Chemical Resistance Char

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

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 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 Char

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

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 Char

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

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 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 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 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)

 

 


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