Machinery's Handbook, 31st Edition
ENVIRONMENTAL CONSIDERATIONS 579 Table 4. Chemical Resistance of Various Materials by Chemical Classes Polyethylene • • • • • • • • Polycarbonate Polyphenylene Sulfide * • • • • • • • • • Polysulfone * Liquid Crystal Polymer * • • • • • • • • Modified Polyphenylene Oxide Polyester Elastomer • • • • • • • • • Polypropylene Thermoplastic Polyester (PET) • • • • • • • • ABS Thermoplastic Polyester (PBT) • • • • • • • • • 316 Stainless Steel Nylon 6 / 6 • • • • • • • • Carbon Steel Acetal Homopolymer • • • • • • • • • Aluminum Acetal Copolymer • • • • • • • • ACIDS AND BASES Acids, weak ABCAAAAAAABAAAAACDilutemineralacids Acids, strong C C C B — C B A B C C B A A B C C Concentrated mineral acids Bases, weak A C A B B A B A B C A A A A A B C Dilute sodium hydroxide Bases, strong A C C — — B C A C C A A A A B B C Concentratedsodium hydroxide Acids, organic, weak ABCAAAAABABAAAACC Acetic acid, vinegar Acids, organic, strong C C C B — C B A C C C A A A B C C Trichloroaceticacid AUTOMOTIVE Automotive, fuel AAAAAAAACCACCAAAA Automotive, lubricants AAAAAAAACCAAAAABA Automotive, hydraulic AA—AA—AACCCAAA——— SOLVENTS Aliphatic hydrocarbons AAAAAAAACAABCAAAAHeptane,hexane Aliphatic hydrocarbons, halogenated A B C B B A A A C C C C C C B B B Ethylene chloride, chloroform Alcohols A A B A A A A A B A A A A A A A B Ethanol, cyclohexanol Aldehydes A A A A B B A A B C B A A — A B A Acetaldehyde, formaldehyde Amines C C C — — — C B C C C C A C A B B Aniline, triethanolamine Aromatic hydrocarbons A B A A B B A A C C C C C C A A A Toluene, xylene, naphtha Aromatic hydrocarbons, halogenated AAA——C—AC C C C C C AAAChlorobenzene Aromatic, hydroxy CCCC—CAACCCCA—BCAPhenol Esters B B A B B B A A C C C C C C B B B Ethyl acetate, dioctyl phthalate Ethers B B A A — — — A C A B C C — A A A Butyl ether, diethyl ether Ketones B B A B B B A A C C C C B C A A A Methyl ethyl ketone, acetone MISCELLANEOUS Detergents A — A — B — — A B A — B A — A A B Laundry and dishwashing detergents, soaps Inorganic salts B B B — A — — A B A — A A A B B B Zinc chloride, cupric sulfate Oxidizing agents, strong C C C — C — B B C C — C A C C C C 30%hydrogenperoxide, bromine (wet) Oxidizing agents, weak C C C A — A A A B A — A A A B C A Sodium hypochlorite solution Water, ambient AABAAAAAAAAAA—ACB Water, hot BCBCCBAAAC—AC—ACB Water, steam CCCCCCBA—C——C—AC— A—minimal effect; B—some effect; C—generally not recommended. This information is presented for instructional purposes and is not intended for design. The data were extracted from numerous sources, making consistent rating assignments difficult. Furthermore, the response of any given material to specific chemicals in any one class can vary significantly. Indeed, during the preparation of the table, the effect on one plastics of various chemicals in the same category ranged from essentially no effect to total dissolution. Therefore, an “A” rating for a particular plastics exposed to a particular class of chemicals should not be interpreted as applying to all chemicals in that class. The rating simply means that for the chemicals in that class found in the literature reviewed, the rating was generally an “A.” There may be other chemicals in the same class for which the rating would be “C.” Finally, the typical chemicals listed do not necessarily correspond to the ones on which the individual ratings are based. Room temperature except for hot water, steam, and materials marked with a * ≡ 200 ° F (93.3°C). Generally, data covering extended exposure (more than a week) were used.
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