Section 721.11253 - Sulfuric acid, ammonium salt (1:?)(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as sulfuric acid, ammonium salt (1:?) (PMN P-18-73, CAS No. 10043-02-4) 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(j) . It is a significant new use to use the substance other than a Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) inert ingredient, an anti-scalant, a chlorine stabilizer, or the additional confidential uses described in the PMN.(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) thru (c) and (i), are applicable to manufacturers, including importers, and processors of this substance.(2)Limitations or revocation of certain notification requirements. The provisions of § 721.185 apply to this section.(3)Determining whether a specific use is subject to this section. The provisions of § 721.1725(b)(1) apply to paragraph (a)(2)(iii) of this section. 85 FR 15957 , Mar. 20, 2020