8/19/2019 Chemical Resistance PTFE

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Materials Technology

Chemical Resistance of PTFEPolytetrauoroethylene (PTFE) is resistant to a broad spectrum of

industrial chemicals, however GORE® Vents should be tested with

all possible combinations of chemicals with which the device may

come into contact.

PTFE is chemically resistant to the industrial chemicals listed below.

 AcidsAcetic Acid, 5%Acetic Acid, Glacial

Boric AcidCitric Acid, 0.7%Formic AcidHydrochloric Acid, Con.Hydrochloric Acid, 6NHydrouoric AcidNitric Acid, Con.Nitric Acid, 6NSulfuric Acid, Con.

 AlcoholsAmyl AlcoholBenzyl AlcoholButyl Alcohol

Ethyl AlcoholIsobutyl AlcoholMethanol

 AldehydesFormaldehydeBenzaldehyde

 AminesDiethylacetamideDimethylformamide

BasesAmmonium Hydroxide, 6NSodium Hydroxide 

EstersAmyl AcetateEthyl Acetate

Isopropyl Acetate

EthersDioxaneTetrahydrofuran

Halogenated HydrocarbonsButyl ChlorideCarbon TetrachlorideChlorobenzeneChloroform

HydrocarbonsBenzeneGasoline

HexaneKerosenePentanePhenol, 0.5%TolueneXylene

KetonesAcetoneCyclohexanoneMethyl Ethyl KetoneMethyl Isobutyl Ketone

PolyalcoholsEthylene Glycol

Glycerol

MiscellaneousAcetonitrileAmmonia

ChlorineCresolDetergents & SoapsDMSOFreon® TF Hydrogen Peroxide, 30%NitrobenzenePetroleum Base OilsPyridineSilicone OilsSodium Hypochlorite (Bleach)Water 

Currently, the only substances known to damage PTFE chemicallyare: elemental sodium and other elemental alkali metals, uorine

and high concentrations (>80%) of metal hydrides, and

amines and imines at high temperature (260°C, 500°F).

This list is provided for reference only and is by no means ex haustive. As many Gore material s

are laminated to provide additional support and/or made with an adhesive layer to assist with

integration, over all chemical resistance must take the backing material into account. Ventsshould be thoroughly tested with all possible combinations of chemicals with which the device

may come into contact.

GORE and design are trademarks of W. L. Gore & Associates. All rights reserved. Freon is a registered trademark of E.I. duPont

de Nemours, Inc.

© 2011 W. L. Gore & Associates, Inc. Printed in USA.

W. L. Gore & Associates, Inc. 

401 Airport Road • Elkton, MD 21921 • USA

Phone: 1.410.392.4440 • Toll-Free: 1.800.455.4670

Fax: 410.506.7993

gore.com

PTFE, the material in GORE™

Membranes, is chemically resistant

to virtually all industrial chemicals.

FOR INDUSTRIAL USE ONLY. Not for use in food, drug, cosmetic ormedical device manufacturing, processing, or packaging operations.