Code of Federal Regulations Title 40. Protection of Environment § 40.721.11467 Carbon nanotubes (generic)

(i) Workplace protection. Requirements as specified in § 721.63(a)(1), (2)(i) and (ii), and (3) through (6), 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(a)(6), particulate (including solids or liquid droplets).

(ii) Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(k) (chemical intermediate to manufacture functionalized carbon nanotubes by oxidation with nitric acid;  additive in rubber polymers to improve mechanical/physical/chemical/electrical properties;  additive in resin polymers to improve mechanical/physical/chemical/electrical properties;  additive in metals to improve electrical/thermal properties;  additive in ceramics to improve mechanical/electrical/thermal properties;  semi-conductor, conductive, or resistive element in electronic circuitry and devices;  electric collector element or electrode in energy devices;  photoelectric or thermoelectric conversion elements in energy devices;  catalyst support element or catalytic electrode for use in energy devices;  additive for transparency and conductivity in electronic devices;  and electro-mechanical element in actuator, sensor, or switching devices).

(iii) Disposal. Requirements as specified in § 721.85(a)(1) and (2), (b)(1) and (2), and (c)(1) and (2).

(iv) Release to water. Requirements as specified in § 721.90(a)(1), (b)(1) and (c)(1).