Section 721.10979 - Boron sodium oxide (B5NaO8), labeled with boron-10(a)Chemical substance and significant new uses subject to reporting.(1) The chemical substance identified as boron sodium oxide (B5NaO8), labeled with boron-10 (PMN P-16-70, CAS No. 200443-98-7) 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)Industrial, commercial, and consumer activities. Requirements as specified in § 721.80 . A significant new use is any use of the substance other than as an emergency shutdown coolant in boiler water reactors.(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 (c) and (i) are applicable to manufacturers and processors of this substance.(2)Limitations or revocation of certain notification requirements. The provisions of § 721.185 apply to this section. 82 FR 44096 , Sept. 21, 2017