§ 721.11224 Spiro tetrafluoroborate (generic).
(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified generically as spiro tetrafluoroborate (PMN P-16-207) 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) through (5) and (6) (particulate), (b)(concentration set at 1.0%), and (c). When determining which persons are reasonably likely to be exposed as required for § 721.63(a)(1) and (4), engineering control measures (e.g., enclosure or confinement of the operation, general and local ventilation) or administrative control measures (e.g., workplace policies and procedures) shall be considered and implemented to prevent exposures, where feasible. For § 721.63(a)(5), respirators must provide a NIOSH assigned protection factor of at least 1000.