Section 721.10439 - 1,3-Dioxolan-2-one, 4-ethenyl(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as 1,3-dioxolan-2-one, 4-ethenyl (PMN P-00-635; CAS No. 4427-96-7) 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), (a)(3), (b) (concentration set at 0.1 percent), and (c).(ii)Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(j) .(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) through (e), 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.(3)Determining whether a specific use is subject to this section. The provisions of § 721.1725(b)(1) apply to paragraph (a)(2)(ii) of this section. 77 FR 58692 , Sept. 21, 2012