(i) Protection in the workplace. Requirements as specified in § 721.63(a)(1), (a)(3) through (5), (a)(6)(v) and (vi), 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 exposure, where feasible. 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. For purposes of § 721.63(6), the airborne form(s) of the substance include particulate (including solids or liquid droplets).

(ii) Hazard communication. Requirements as specified in § 721.72(a) through (d), (f), (g)(1), (g)(2)(i), (ii), (iv), and (v), and (g)(5). For purposes of § 721.72(g)(1), this substance may cause: Skin irritation; respiratory complications; mutagenicity. Alternative hazard and warning statements that meet the criteria of the Globally Harmonized System and OSHA Hazard Communication Standard may be used.

(iii) Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(o), (y)(1), and (y)(2). It is a significant new use to manufacture the substance containing more than 1% residual isocyanate by weight.