Section 721.9973 - Zirconium dichlorides (generic)(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substances identified generically as zirconium dichlorides (PMNs P-97-179/181/189/769/775/781/782/783) are 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 = 20).(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 these substances.(2)Limitations or revocation of certain notification requirements. The provisions of § 721.185 apply to this section.63 FR 44583, Aug. 20, 1998