§ 721.11758 Multi-walled carbon nanotubes; closed; 4.4-12.8 nm diameter; bundle length 10.6-211.1 µm; Grade: Jenotube 6.
(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as multi-walled carbon nanotubes; closed; 4.4-12.8 nm diameter; bundle length 10.6-211.1 µm; Grade: Jenotube 6 (PMN P-20-62) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section. The requirements of this section do not apply to quantities of the substance after they have been completely reacted or cured or incorporated into an article.
(2) The significant new uses are:
(i) Protection in the workplace. Requirements as specified in § 721.63(a)(3), (5), (6)(vii), (7) and (8), and (c). For purposes of § 721.63(a)(5), respirators must provide a National Institute for Occupational Safety and Health (NIOSH) assigned protection factor (APF) of at least 50.