Section 721.11291 - Polythioether, short chain diol polymer terminated with aliphatic diisocyanate (generic)(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified generically as polythioether, short chain diol polymer terminated with aliphatic diisocyanate (PMN P-18-219) 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. It is a significant new use to manufacture the PMN substance with molecular weight greater than 10,000 daltons. It is a significant new use to manufacture the PMN substance with free isocyanate residuals greater than 0.01% by weight.(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) though (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 24333 , May 6, 2021