Section 721.10543 - Oxetane, 3-methyl-3-[(2,2,3,3,3-pentafluoropropoxy)methyl]-(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as oxetane, 3-methyl-3-[(2,2,3,3,3-pentafluoropropoxy)methyl]- (PMN P-04-79; CAS No. 449177-94-0) 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)(2)(i), (a)(3), (b) (concentration set at 0.1 percent), and (c).(ii) [Reserved](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) 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.