(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as diphosphoric acid, calcium salt (1:1) (PMN P-10-313; CAS No. 14866-19-4) 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) (opacifying agent for ceramic whiteware).

(ii) Release to water. Requirements as specified in § 721.90(a)(4), (b)(4), and (c)(4) (N = 60).

(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), (i), 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.