Section 721.2520 - Alkylated diphenyls(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substances identified generically as alkylated diphenyls (PMN Nos. P-90-237, P-90-248, and P-90-249) 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) (where N = 1 ppb).(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 significant new use rule.58 FR 32237, June 8, 1993