EPA is revoking the significant new use rule (SNUR) promulgated under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for two chemical substances that were identified generically as metal salts of complex inorganic oxyacids, which were the subject of premanufacture notices (PMNs) P-89-576 and P-89-577. EPA issued a SNUR based on a TSCA section 5(e) consent order designating certain activities as significant new uses. EPA has received test data for the chemical substances and is revoking the SNUR.