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CPVC Chlorinated Polyvinylchloride
Polyvinylchloride can be modified through chlorination to obtain a vinyl chloride plastic with improved corrosion resistance and the ability to withstand operating temperatures that are 50 to 60 F higher. CPVC has about the same range of chemical resistance as rigid PVC.
It has been determined that marked improvement in residual tensile strength is noted with CPVC in comparison with PVC on exposure for 30 days in such environments as 20 percent acetic acid, 40-50 percent chromic acid, 60 to 70 percent nitric acid, and 80 percent sulfuric acid, hexane, and 80 percent sodium hydroxide at 73 F, 140 F, and 185 F. CPVC has been chiefly used as pipe, fittings, ducts, tanks, and pumps for handling highly corrosive liquids.
It has been determined that marked improvement in residual tensile strength is noted with CPVC in comparison with PVC on exposure for 30 days in such environments as 20 percent acetic acid, 40-50 percent chromic acid, 60 to 70 percent nitric acid, and 80 percent sulfuric acid, hexane, and 80 percent sodium hydroxide at 73 F, 140 F, and 185 F. CPVC has been chiefly used as pipe, fittings, ducts, tanks, and pumps for handling highly corrosive liquids.