§ 721.10230 Rutile, tin zinc, calcium doped.
(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as rutile, tin zinc, calcium-doped (PMN P–06–36; CAS No. 389623–01–2) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section. The requirements of this rule do not apply to quantities of the PMN substance that have been incorporated into a polymer, glass, dispersion, cementitious matrix, or a similar incorporation.
(2) The significant new uses are:
(i) Protection in the workplace. Requirements as specified in § 721.63(a)(4), (a)(6)(i), (b) (concentration set at 1.0 percent), and (c). The following National Institute for Occupational Safety and Health (NIOSH)-certified respirators with an assigned protection factor (APF) of 10 meet the minimum requirements for § 721.63(a)(4):