Section 721.11497 - Oxirane, 2-methyl-, polymer with oxirane, mono(3,5,5-trimethylhexanoate)(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as oxirane, 2-methyl-, polymer with oxirane, mono(3,5,5-trimethylhexanoate) (PMN P-20-52, CAS No. 148263-50-7) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section.(2) The significant new uses are:(i)Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(o) . It is a significant new use to manufacture, process or use the substance in a manner that results in inhalation exposures. It is a significant new use to use the substance other than as a liquid shrinkage reducing admixture for concrete.(b)Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph (b). (1)Recordkeeping. Recordkeeping requirements as specified in § 721.125(a) through (c), and (i) are applicable to manufacturers and processors of this substance.(2)Limitation or revocation of certain notification requirements. The provisions of § 721.185 apply to this section. 86 FR 30194 , June 7, 2021