Chemical Resistance – DTPL PRODUCTS

TECHNICAL INFO

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

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 HOU

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

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

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
Nitric Acid	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
Ammonium Hydroxide	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)