Technical Information

Chemical Use Temperature Guide

fluoropolymer resinDuPont� Tefzel®

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Tefzel® �Tough for Abrasive ServiceTefzel® fluoropolymer resin is a proven performer inthe chemical and petrochemical processing indus-tries. It has gained notable recognition for its uniqueproperties and design versatility which are helpingto solve some of the industry’s toughest materialsproblems in process equipment and components.

Like DuPont’s family of Teflon® fluoropolymerresins, Tefzel® provides excellent resistance to attackby chemicals and solvents which can cause rapiddeterioration of other plastics and all but the mostcostly metal alloys.

Tefzel® is inert to strong mineral acids, inorganicbases, halogens and metal salt solutions. Evencarboxylic acids, anhydrides, aromatic and aliphatichydrocarbons, alcohols, aldehydes, ketones, ethers,esters, chlorocarbons and classic polymer solventshave little effect on Tefzel®. Very strong oxidizingacids near their boiling points, such as nitric at highconcentration, will however affect Tefzel® in varyingdegrees. So will strong organic bases such as aminesand sulfonic acids.

In addition to its chemical resistance, Tefzel® hasexcellent mechanical strength, stiffness and abrasionresistance. This may be an important considerationfor process applications where abrasive slurriesoften accelerate wear and degradation of alternativematerials. Tefzel® can also be reinforced with glassfibers to increase the flexural modulus to 950,000psi/6,550 MPa.

Tefzel® has a broad continuous use temperaturerange from –150° to 300°F (–100° to 150°C).Specific temperature ratings vary with equipmentdesign, thus it is important to consult withcomponent manufacturers for in-use servicerecommendations.

Chemical Resistance GuideTable 1 lists over 450 chemicals whose corrosivecharacteristics create problems which can often besolved by specifying Tefzel® fluoropolymer. Themaximum use temperature for each chemicalservice listed is suggested as a guide only.

Not all chemicals listed have been tested in aDuPont laboratory. This guide is based on selectivelaboratory tests of representative chemicals; fieldapplications and experience; and engineeringjudgments as to the suitability of Tefzel® in thesechemical environments.

Table 1 lists chemicals and the “upper suggesteduse temperatures” for organic and inorganicchemicals and plating solutions. The temperatureratings, especially for inorganic chemicals, applyto aqueous and nonaqueous systems. It is recom-mended that tests be conducted under actual orsimulated use conditions wherever possible todetermine suitability of Tefzel® or any other mate-rial for a specific application. It is also suggestedthat the equipment fabricator be consulted forin-use service recommendations.

RepresentativeCompatibility DataThe data presented in Table 2 show the effects ofvarious representative chemicals on the propertiesof Tefzel® as tested in DuPont laboratories.

The DuPont Oval Logo, DuPont™, The miracles of science™,and Tefzel® are trademarks or registered trademarks ofE.I. du Pont de Nemours and Company.

Table 1Chemical Compatibility Data on DuPont™ Tefzel ®

(Based on Tests of Representative Materials and Engineering Judgment)

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Maximum UseTemperature

Chemical °F °C

Maximum UseTemperature

Chemical °F °C

A Acetaldehyde 200 95Acetamide 250 120Acetic Acid (50%) 250 120Acetic Acid (Glacial) 230 110Acetic Anhydride 300 150Acetone 150 65Acetone (50% H2O) 150 65Acetonitrile 150 65Acetophenone 300 150Acetylchloride 150 65Acetylene 250 120Acetylene Tetrabromide 300 150Acetylene Tetrachloride 300 150Acrylonitrile 150 65Adipic Acid 275 135Air 300 150Allyl Alcohol 212 100Allyl Chloride 212 100Aluminum Ammonium Sulfate 300 150Aluminum Chloride 300 150Aluminum Fluoride 300 150Aluminum Hydroxide 300 150Aluminum Nitrate 300 150Aluminum Oxychloride 300 150Aluminum Potassium Sulfate 300 150Amino Acids (H2O) 212 100Ammonia (Anhydrous) 300 150Ammonia (Aqueous 30%) 230 110Ammonium Bifluoride 300 150Ammonium Bromide (50%) 275 135Ammonium Carbonate 300 150Ammonium Chloride 300 150Ammonium Dichromate 275 135Ammonium Fluoride 300 150Ammonium Hydroxide 300 150Ammonium Nitrate (Conc.) 230 110Ammonium Perchlorate 275 135Ammonium Persulfate 150 65Ammonium Phosphate 300 150Ammonium Sulfate 300 150Ammonium Sulfide 300 150Ammonium Thiocyanate 300 150Amyl Acetate 250 120Amyl Alcohol 300 150Amyl Chloride 300 150Aniline 230 110Aniline Hydrochloride (10%) 150 65Anthraquinone 275 135Anthraquinone-Sulfonic Acid 275 135Antimony Trichloride 212 100Aqua Regia 212 100Arsenic Acid 300 150

B Barium Carbonate 300 150Barium Chloride 300 150Barium Hydroxide 300 150

Barium Sulfate 300 150Barium Sulfide 300 150Battery Acid 250 120Benzaldehyde 212 100Benzene 212 100Benzene Sulfonic Acid 212 100Benzoic Acid 275 135Benzoyl Chloride 150 65Benzyl Alcohol 300 150Benzyl Chloride 300 150Bismuth Carbonate 300 150Black Liquor 300 150Bleach (12.5% Cl2) 212 100Borax 300 150Boric Acid 300 150Brine 300 150Bromic Acid 250 120Bromine (Dry) 150 65Bromine Water (10%) 230 110mono-Bromobenzene 212 100Bromoform 212 100m-Bromotoluene 212 100Butadiene 250 120Butane 300 150Butanediol 275 135Butyl Acetate 230 110Butyl Acrylate 230 110n-Butyl Alcohol 300 150sec-Butyl Alcohol 300 150tert-Butyl Alcohol 300 150n-Butylamine 120 50sec-Butylamine 120 50tert-Butylamine 120 50di-n-Butyl Amine 230 110tri-n-Butyl Amine 230 110Butylene 300 150Butyl Bromide 300 150Butyl Chloride 300 150n-Butyl Mercaptan 300 150Butyl Phenol 230 110Butyl Phthalate 150 65Butyraldehyde 212 100Butyric Acid 250 120

C Calcium Bisulfate 300 150Calcium Bisulfide 300 150Calcium Carbonate 300 150Calcium Chlorate 300 150Calcium Chloride 300 150Calcium Hydroxide 300 150Calcium Hypochlorite 300 150Calcium Nitrate 300 150Calcium Oxide 275 135Calcium Sulfate 300 150Calcium Sulfide 250 120Caprylic Acid 212 100

(continued)

Maximum UseTemperature

Chemical °F °C

Maximum UseTemperature

°F °C

4

Table 1 (continued)Chemical Compatibility Data on DuPont™ Tefzel ®

(Based on Tests of Representative Materials and Engineering Judgment)

Chemical

Carbon Dioxide (Dry) 300 150Carbon Dioxide (Wet) 300 150Carbon Disulfide 150 65Carbon Monoxide 300 150Carbon Tetrachloride 150 65Carbonic Acid 300 150Castor Oil 300 150Caustic Potash (10 and 50%) 212 100Caustic Soda (10 and 50%) 212 100Cellosolve® 300 150Chloral Hydrate 212 100Chlorinated Brine 250 120Chlorinated Phenol 212 100Chlorine (Dry) 212 100Chlorine (Wet) 250 120Chlorine Dioxide 250 120Chloroacetic Acid (50% H2O) 230 110Chlorobenzene 212 100Chlorobenzyl Chloride 150 65Chloroform 212 100Chlorohydrin (Liquid) 150 65Chlorosulphonic Acid 75 25Chromic Acid (50%) 150 65Chromic Chloride 212 100Chromyl Chloride 212 100Clorox Bleach Solution (5-1/2% Cl2) 212 100Coal Gas 212 100Copper Chloride 300 150Copper Cyanide 300 150Copper Fluoride 300 150Copper Nitrate 300 150Copper Sulfate 300 150Cresol 275 135Cresylic Acid 275 135Crotonaldehyde 212 100Crude Oil 300 150Cyclohexane 300 150Cyclohexanol 250 120Cyclohexanone 300 150

D DDT 212 100Decalin 250 120Decane 300 150Dextrin 300 150Diacetone Alcohol 212 1001,2-Dibromopropane 200 95Dibutyl Phthalate 150 65Dichloroacetic Acid 150 65o-Dichlorobenzene 150 65Dichloroethylene 150 65Dichloropropionic Acid 150 65Diesel Fuels 300 150Diethyl Benzene 275 135Diethyl Cellosolve 300 150Diethyl Ether 212 100Diethylamine 230 110Diethylene Triamine 212 100

Diglycolic Acid 212 100Diisobutyl Ketone 230 110Diisobutylene 275 135Dimethyl Formamide 250 120Dimethyl Phthalate 212 100Dimethyl Sulfate 150 65Dimethyl Sulfoxide 212 100Dimethylamine 120 50Dimethylaniline 275 135Dioctyl Phthalate 150 65p-Dioxane 150 65Diphenyl Ether 175 80Divinyl Benzene 175 80

E Epichlorhydrin 150 65Ethyl Acetate 150 65Ethyl Acrylate 212 100Ethyl Alcohol 300 150Ethyl Chloride 300 150Ethyl Chloroacetate 212 100Ethyl Cyanoacetate 212 100Ethylacetoacetate 150 65Ethylamine 100 40Ethylene Bromide 300 150Ethylene Chloride 300 150Ethylene Chlorohydrin 150 65Ethylene Diamine 120 50Ethylene Glycol 300 150Ethylene Oxide 230 110

F Fatty Acids 300 150Ferric Chloride (50% in H2O) 300 150Ferric Hydroxide 300 150Ferric Nitrate 300 150Ferric Sulfate 300 150Ferrous Chloride 300 150Ferrous Hydroxide 300 150Ferrous Nitrate 300 150Ferrous Sulfate 300 150Fluorine (Gaseous) 100 40Fluoroboric Acid 275 135Fluosilicic Acid 275 135Formaldehyde (37% in H2O) 230 110Formic Acid 275 135FREON® 11 230 110FREON® 12 230 110FREON® 22 230 110Fuel Oil 300 150Fumaric Acid 200 95Furane 150 65Furfural 212 100

G Gallic Acid 212 100Gas—Manufactured 300 150Gas—Natural 300 150Gasoline—Leaded 300 150Gasoline—Sour 300 150Gasoline—Unleaded 300 150

Maximum UseTemperature

Chemical °F °C

Table 1 (continued)Chemical Compatibility Data on DuPont™ Tefzel ®

(Based on Tests of Representative Materials and Engineering Judgment)

Maximum UseTemperature

Chemical °F °C

5

(continued)

Glycerol 300 150Glycol 275 135Glycolic Acid 250 120

H Heptane 300 150Hexane 300 150Hydrazine 100 40Hydrazine Dihydrochloride 125 50Hydriodic Acid 300 150Hydrobromic Acid (50%) 300 150Hydrochloric Acid (20%) 300 150Hydrochloric Acid (Conc.) 300 150Hydrochloric Acid (Gas) 300 150Hydrocyanic Acid 300 150Hydrofluoric Acid (35%) 275 135Hydrofluoric Acid (70%) 250 120Hydrofluoric Acid (100%) 230 110Hydrofluorosilicic Acid 300 150Hydrogen 300 150Hydrogen Cyanide 300 150Hydrogen Peroxide (30%) 250 120Hydrogen Peroxide (90%) 150 65Hydrogen Phosphide 150 65Hydrogen Sulfide (Dry) 300 150Hydrogen Sulfide (Wet) 300 150Hydroquinone 250 120Hypochlorous Acid 300 150

I Inert Gases 300 150Iodine (Dry) 230 110Iodine (Wet) 230 110Iodoform 230 110Isobutyl Alcohol 275 135Isopropylamine 120 50

J Jet Fuel—JP4 230 110Jet Fuel—JP5 230 110

L Lactic Acid 250 120Lard Oil 300 150Lauric Acid 250 120Lauryl Chloride 275 135Lauryl Sulfate 250 120Lead Acetate 300 150Linoleic Acid 275 135Linseed Oil 300 150Lithium Bromide (Saturated) 250 120Lithium Hydroxide 300 150Lubricating Oil 300 150

M Magnesium Carbonate 300 150Magnesium Chloride 300 150Magnesium Hydroxide 300 150Magnesium Nitrate 300 150Magnesium Sulfate 300 150Maleic Acid 275 135Maleic Anhydride 200 95Malic Acid 275 135Mercuric Chloride 275 135

Mercuric Cyanide 275 135Mercuric Nitrate 275 135Mercury 275 135Methacrylic Acid 200 95Methane 250 120Methane Sulfonic Acid (50%) 230 110Methyl Alcohol 300 150n-Methylaniline 250 120Methyl Benzoate 250 120Methyl Bromide 300 150Methyl Cellosolve® 300 150Methyl Chloride 200 95Methyl Chloroform 150 65Methyl Chloromethyl Ether 175 80Methyl Cyanoacetate 175 80Methyl Ethyl Ketone 230 110Methyl Isobutyl Ketone 230 110Methyl Methacrylate 175 80Methyl Salicylate 200 95Methyl Sulfuric Acid 212 100Methyl Trichlorosilane 200 95Methylene Bromide 212 100Methylene Chloride 212 100Methylene Iodide 212 100Mineral Oil 300 150Monochlorobenzene 230 110Monoethanolamine 150 65Morpholine 150 65

N Naphtha 300 150Naphthalene 300 150Nickel Chloride 300 150Nickel Nitrate 300 150Nickel Sulfate 300 150Nicotine 212 100Nicotinic Acid 250 120Nitric Acid (50%) 221 105Nitric Acid (Conc. 70%) 248 120Nitric Acid—Sulfuric Acid (50/50) 212 100Nitrobenzene 300 150Nitrogen Dioxide 212 100Nitrogen Gas 300 150Nitromethane 212 100Nitrous Acid 212 100

O Octane 300 150Octene 300 150Oleic Acid 275 135Oleum 120 50Oxalic Acid 230 110Oxygen 300 150Ozone (<1% in Air) 212 100

P Palmitic Acid 275 135Perchlorethylene 275 135Perchloric Acid (10%) 230 110Perchloric Acid (72%) 150 65Petrolatum 300 150

Maximum UseTemperature

Chemical °F °C

Maximum UseTemperature

Chemical °F °C

6

Table 1 (continued)Chemical Compatibility Data on DuPont™ Tefzel ®

(Based on Tests of Representative Materials and Engineering Judgment)

Silicon Tetrachloride 250 120Silver Chloride 300 150Silver Cyanide 300 150Silver Nitrate 300 150Sodium Acetate 300 150Sodium Benzene-Sulfonate 300 150Sodium Benzoate 300 150Sodium Bicarbonate 300 150Sodium Bisulfate 300 150Sodium Bisulfite 300 150Sodium Borate 212 100Sodium Bromide 300 150Sodium Carbonate 300 150Sodium Chlorate 300 150Sodium Chloride 300 150Sodium Chromate 300 150Sodium Cyanide 300 150Sodium Dichromate (Alkaline) 212 100Sodium Ferricyanide 300 150Sodium Ferrocyanide 300 150Sodium Fluoride 300 150Sodium Glutamate 275 135Sodium Hydroxide (10%) 230 110Sodium Hydroxide (50%) 230 110Sodium Hypochlorite 300 150Sodium Hyposulfite 300 150Sodium Iodide 300 150Sodium Lignosulfonate 300 150Sodium Metasilicate 300 150Sodium Nitrate 300 150Sodium Nitrite 300 150Sodium Perborate 212 100Sodium Perchlorate 150 65Sodium Peroxide 300 150Sodium Persulfate 175 80Sodium Phosphate 300 150Sodium Silicate 300 150Sodium Silicofluoride 300 150Sodium Sulfate 300 150Sodium Sulfide 300 150Sodium Sulfite 300 150Sodium Thiosulfate 300 150Sorbic Acid 275 135Sour Crude Oil 300 150Stannic Chloride 300 150Stannous Chloride 300 150Stannous Fluoride 250 120Stearic Acid 300 150Stoddard’s Solvent 275 135Styrene Monomer 212 100Succinic Acid 275 135Sulfamic Acid 212 100Sulfur (Molten) 250 120Sulfur Dioxide 230 110Sulfur Trioxide (Liquid) 75 25Sulfuric Acid (60%) 300 150

Petroleum 300 150Petroleum Ether 212 100Phenol (10%) 230 110Phenol (100%) 212 100Phenolsulfonic Acid 212 100Phenylhydrazine 212 100Phenylhydrazine Hydrochloride 212 100o-Phenylphenol 212 100Phosgene 212 100Phosphoric Acid (30%) 300 150Phosphoric Acid (85%) 275 135Phosphorus Oxychloride 221 100Phosphorus Pentachloride 212 100Phosphorus Pentoxide 230 110Phosphorus Trichloride 250 120Phthalic Acid 212 100Phthalic Anhydride 212 100Picric Acid 125 50Polyvinyl Acetate 300 150Polyvinyl Alcohol 300 150Potassium Aluminum Chloride 300 150Potassium Aluminum Sulfate (50%) 300 150Potassium Bicarbonate 300 150Potassium Borate 300 150Potassium Bromate 300 150Potassium Bromide 300 150Potassium Carbonate 300 150Potassium Chlorate 300 150Potassium Chloride 300 150Potassium Chromate 300 150Potassium Cyanide 300 150Potassium Dichromate 300 150Potassium Ferrocyanide 300 150Potassium Fluoride 300 150Potassium Hydroxide (50%) 212 100Potassium Hypochlorite 275 135Potassium Nitrate 300 150Potassium Perborate 275 135Potassium Perchlorate 212 100Potassium Permanganate 300 150Potassium Persulfate 150 65Potassium Sulfate 300 150Potassium Sulfide 300 150Propane 275 135Propionic Acid 212 100Propyl Alcohol 300 150Propylene Dibromide 212 100Propylene Dichloride 212 100Propylene Glycol Methyl Ether 212 100Propylene Oxide 150 65Pyridine 150 65Pyrogallol 150 65

S Salicylaldehyde 212 100Salicylic Acid 250 120Salt Brine 300 150Sea Water 300 150

Table 1 (continued)Chemical Compatibility Data on DuPont™ Tefzel ®

(Based on Tests of Representative Materials and Engineering Judgment)

Maximum UseTemperature

°F °C

7

Chemical

Maximum UseTemperature

Chemical °F °C

Sulfuric Acid (Conc.) 300 150Sulfuric Acid (Fuming—Oleum) 120 50Sulfurous Acid 230 110

T Tall Oil 300 150Tannic Acid 275 135Tartaric Acid 275 1352,3,4,6-Tetrachlorophenol 212 100Tetraethyl Lead 300 150Tetrahydrofuran 212 100Tetramethyl Ammonium

Hydroxide (50%) 212 100Thionyl Chloride 212 100Tin Tetrachloride 230 110Titanium Dioxide 300 150Titanium Tetrachloride 212 100Toluene 250 120Tributyl Phosphate 150 65Trichloracetic Acid 212 100Trichloroethylene 275 135Trichloromethane 212 1002,4,5-Trichlorophenol 212 100Triethylamine 230 110Trisodium Phosphate 275 135Turpentine 275 135

U UDMH-Hydrazine (50/50) 120 50Urea (50% H2O) 275 135

V Varsol 275 135Vinyl Acetate 275 135Vinyl Chloride (Monomer) 150 65

W Water 300 150Water Sewage 275 135Wax 300 150

X Xylene 250 120

Z Zinc Acetate 250 120Zinc Chloride 300 150Zinc Hydrosulfite (10%) 250 120Zinc Nitrate 300 150Zinc Sulfate 300 150Zinc Sulfide 300 150

PLATING SOLUTIONSBrass 275 135Cadmium 275 135Chrome 275 135Copper 275 135Gold 275 135

RepresentativeCompatibility DataThe test results shown in Table 2 represent thetensile strength, elongation and weight changes afterexposures at indicated temperatures.

These test results confirm the chemical resistantproperties of Tefzel®.

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Table 2Actual Laboratory Tests on

Chemical Compatibility of DuPont™ Tefzel ® with Representative Chemicals

Boiling Test Retained Properties—%Point Temperature Tensile Weight

Chemical °F °C °F °C Days Strength Elong. Gain

Acid/AnhydridesAcetic Acid (Glacial) 244 118 244 118 7 82 80 3.4Acetic Anhydride 282 139 282 139 7 100 100 0Trichloroacetic Acid 384 196 212 100 7 90 70 0

Aliphatic HydrocarbonsMineral Oil — — 356 180 7 90 60 0Naphtha — — 212 100 7 100 100 0.5

Aromatic HydrocarbonsBenzene 176 80 176 80 7 100 100 0Toluene 230 110 230 110 7 — — —

Functional AromaticsO-Cresol 376 191 356 180 7 100 100 0

AminesAniline 365 185 248 120 7 81 99 2.7Aniline 365 185 248 120 30 93 82 —Aniline 365 185 356 180 7 95 90 —N,N-Dimethylaniline 374 190 248 120 7 82 97 —N-Methylaniline 383 195 248 120 7 85 95 —N-Methylaniline 383 195 248 120 30 100 100 —n-Butylamine 172 78 172 78 7 71 73 4.4Di-n-Butylamine 318 159 248 120 7 81 96 —Di-n-Butylamine 318 159 248 120 30 100 100 —Di-n-Butylamine 318 159 320 160 7 55 75 —Tri-n-Butylamine 421 216 248 120 7 81 80 —Tri-n-Butylamine 421 216 248 120 30 100 100 —Pyridine 240 116 240 116 7 100 100 1.5

Chlorinated SolventsCarbon Tetrachloride 172 78 172 78 7 90 80 4.5Chloroform 144 62 142 61 7 85 100 4.0Dichloroethylene 170 77 90 32 7 95 100 2.8FREON® 113 115 46 115 46 7 100 100 0.8Methylene Chloride 104 40 104 40 7 85 85 0

EthersTetrahydrofuran 151 66 151 66 7 86 93 3.5

Aldehyde/KetonesAcetone 132 56 132 56 7 80 83 4.1Acetophenone 394 201 356 180 7 80 80 1.5Cyclohexanone 312 156 312 156 7 90 85 0Methyl Ethyl Ketone 176 80 176 80 7 100 100 0

*Exposed for 6 hours.

NOTES: Change in properties -15% is considered insignificant. Samples were 10–15 mil microtensile bars. TS/E and wt. gain determinedwithin 24 hours after removal from exposure media.

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Table 2 (continued)Actual Laboratory Tests on

Chemical Compatibility of DuPont™ Tefzel ® with Representative Chemicals

Boiling Test Retained Properties—%Point Temperature Tensile Weight

Chemical °F °C °F °C Days Strength Elong. Gain

Estersn-Butyl Acetate 260 127 260 127 7 80 60 0Ethyl Acetate 170 77 170 77 7 85 60 0

Polymer SolventsDimethylformamide 309 154 194 90 7 100 100 1.5Dimethylformamide 309 154 248 120 7 76 92 5.5Dimethylsulfoxide 373 189 194 90 7 95 90 1.5

Other OrganicsBenzoyl Chloride 387 197 248 120 7 94 95 —Benzoyl Chloride 387 197 248 120 30 100 100 —Benzyl Alcohol 401 205 248 120 7 97 90 —Decalin 374 190 248 120 7 89 95 —Phthaloyl Chloride 529 276 248 120 30 100 100 —

AcidsAqua Regia — — 194 90 * 93 89 0.2Chromic 257 125 257 125 7 66 25 —Hydrobromic (Conc) 257 125 257 125 7 100 100 —Hydrochloric (Conc) 223 106 73 23 7 100 90 0Hydrochloric (Conc) 223 106 223 106 7 96 100 0.1Hydrofluoric (Conc) — — 73 23 7 97 95 0.1Nitric—25% 212 100 212 100 14 100 100 —Nitric—50% 221 105 221 105 14 87 81 —Nitric—70% (Conc) 248 120 73 23 105 100 100 0.5Nitric—70% (Conc) 248 120 140 60 53 100 100 —Nitric—70% (Conc) 248 120 248 120 2 72 91 —Nitric—70% (Conc) 248 120 248 120 3 58 5 —Nitric—70% (Conc) 248 120 248 120 7 0 0 —Phosphoric (Conc) — — 212 100 7 — — —Phosphoric (Conc) — — 248 120 7 94 93 0Sulfuric (Conc) — — 212 100 7 100 100 0Sulfuric (Conc) — — 248 120 7 98 95 0Sulfuric (Conc) — — 302 150 * 98 90 0

HalogensBromine (Anhy) 138 59 73 23 7 90 90 1.2Bromine (Anhy) 138 59 135 57 7 99 100 —Bromine (Anhy) 138 59 135 57 30 94 93 3.4Chlorine (Anhy) — — 248 120 7 85 84 7

BasesAmmonium Hydroxide — — 150 66 7 97 97 0Potassium Hydroxide

(20%) — — 212 100 7 100 100 0Sodium Hydroxide

(50%) — — 248 120 7 94 80 0.2

PeroxidesHydrogen Peroxide

(30%) — — 73 23 7 99 98 0

(continued)

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Table 2 (continued)Actual Laboratory Tests on

Chemical Compatibility of DuPont™ Tefzel ® with Representative Chemicals

Boiling Test Retained Properties—%Point Temperature Tensile Weight

Chemical °F °C °F °C Days Strength Elong. Gain

Salt-Metal EtchantsFerric Chloride

(25%) 220 104 212 100 7 95 95 0Zinc Chloride

(25%) 220 104 212 100 7 100 100 0

Other InorganicsPhosphoric Oxychloride 220 104 220 104 7 100 100 —Phosphoric Trichloride 167 75 167 75 7 100 98 —Silicon Tetrachloride 140 60 140 60 7 100 100 —Sulfuryl Chloride 115 68 155 68 7 86 100 8Water 212 100 212 100 7 100 100 0

MiscellaneousA-20 Stripper Solution — — 284 140 7 90 90 —Aerosafe — — 300 149 7 92 93 3.9Skydrol — — 300 149 7 100 95 3.0

*Exposed for 6 hours.

NOTES: Change in properties -15% is considered insignificant. Samples were 10–15 mil microtensile bars. TS/E and wt. gain determinedwithin 24 hours after removal from exposure media.

(10/03) RWJ109 Printed in U.S.A.[Replaces: E-18663-7]Reorder No.: H96532

For more information on Fluoroproducts: (302) 479-7731DuPont FluoroproductsP.O. Box 80713Wilmington, DE 19880-0713www.teflon.com

EuropeDuPont de Nemours Int’l SADuPont Fluoroproducts2, chemin du PavillonP.O. Box 50CH-1218 Le Grand-SaconnexGeneva, Switzerland(022) 7175111

JapanDuPont MitsuiFluorochemicals Co., Ltd.Chiyoda Honsha Building5–18, Sarugaku-cho 1-chomeChiyoda-ku, Tokyo 101 Japan81-3-5281-5872

Asia PacificDuPont China, Limited26/F., Tower 6, The Gateway9 Canton Road, TsimshatsuiKowloon, Hong Kong(852) 27341948Tim-S.T.Leung@hkg.dupont.com

CanadaDuPont Canada, Inc.DuPont FluoroproductsP.O. Box 2200, Streetsville7070 Mississauga RoadMississauga, Ontario, CanadaL5M 2H3(905) 821-5194

South AmericaDuPont do Brasil S/AFluoropolymersAlameda Itapecuru, 50606454-080 - AlphavilleP.O. Box 263Barueri, Sao Paulo, Brazil0800-171715Produtos.Brazil@bra.dupont.com

The information set forth herein is furnished free of charge and is based on technical data that DuPont believes to be reliable. It is intended for use by persons having technicalskill, at their own discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that theirparticular conditions of use present no health or safety hazards. Because conditions of product use are outside our control, we make no warranties, express or implied, andassume no liability in connection with any use of this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential.Nothing herein is to be taken as a license to operate under or a recommendation to infringe any patents.CAUTION: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, see “DuPont Medical Caution Statement,”H-50102.