Section 721.10106 - Silica, [(ethenylsilylidyne)tris(oxy)] - modified(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as silica, [(ethenylsilylidyne)tris(oxy)] - modified (PMN P-04-419; CAS No. 649574-37-8) 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 (v)(1), (w)(1), and (x)(1) .(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 (i) 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. 73 FR 65761 , Nov. 5, 2008