Section 721.10135 - Phosphinic acid, P,P-diethyl-, zinc salt (2:1)(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as phosphinic acid, P,P-diethyl-, zinc salt (2:1) (PMN P-05-11; CAS No. 284685-45-6) 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)Release to water. Requirements as specified in § 721.90 (a)(4), (b)(4), and (c)(4) (N = 12).(b)Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph. (1)Recordkeeping. Recordkeeping requirements as specified in § 721.125 (a), (b), (c), and (k) are applicable to manufacturers, importers, and processors of this substance.(2)Limitations or revocation of certain notification requirements. The provisions of § 721.185 apply to this section. 74 FR 29994 , June 24, 2009