Section 721.9662 - Thieno[3,4-b]-1,4-dioxin, 2,3-dihydro- (9CI)(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as thieno[3,4-b]-1,4-dioxin, 2,3-dihydro- (9CI) (PMN P-95-1825; CAS No. 126213-50-1) 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)Protection in the workplace. Requirements as specified in § 721.63 (a)(1) and (a)(2)(i) .(ii)Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(f) .(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), (d), (e), 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.63 FR 3439, Jan. 22, 1998; 63 FR 9441, Feb. 25, 1998