EPA is withdrawing a significant new use rule (SNUR) promulgated under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for the chemical substance identified as 1-Propene, 2,3,3,3- tetrafluoro- (CAS No. 754-12-1), which was the subject of premanufacture notice (PMN) P-07-601. EPA published the SNUR using direct final rulemaking procedures. EPA received a notice of intent to submit adverse comments on the rule. Therefore, the Agency is withdrawing the SNUR, as required under the expedited SNUR rulemaking process. Elsewhere in today's Federal Register, EPA is publishing (under separate notice and comment rulemaking procedures) a proposed SNUR for this substance.