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Federal Register / Vol. 86, No. 157 / Wednesday, August 18, 2021 / Rules and Regulations
2 Limitation or revocation of certain notification requirements. The provisions of 721.185 apply to this section.
3 Determining whether a specific use is subject to this section. The provisions of 721.1725b1 apply to paragraph a2ii of this section.
721.11349 Sulfonated perfluoropolyether aromatic transition metal salt generic.

a Chemical substance and significant new uses subject to reporting.
1 The chemical substance identified generically as sulfonated perfluoropolyether aromatic transition metal salt PMN P16154 is subject to reporting under this section for the significant new uses described in paragraph a2 of this section.
2 The significant new uses are:
i Hazard communication.
Requirements as specified in 721.72a through f, g3i and ii, g4i and iii, and g5. Alternative hazard and warning statements that meet the criteria of the Globally Harmonized System and OSHA Hazard Communication Standard may be used.
For purposes of 721.72e, the concentration is set at 1.0%.
ii Industrial, commercial, and consumer activities. Requirements as specified in 721.80k and t.
iii Disposal. Requirements as specified in 721.85a1, b1, and c1. Incineration must be hazardous waste high temperature incineration where the treatment efficiency is no less than 99.99%.
iv Release to water. Requirements as specified in 721.90a1, b1, and c1.
b Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph.
1 Recordkeeping. Recordkeeping requirements as specified in 721.125a through c and f through k are applicable to manufacturers and processors of this substance.
2 Limitation or revocation of certain notification requirements. The provisions of 721.185 apply to this section.
3 Determining whether a specific use is subject to this section. The provisions of 721.1725b1 apply to paragraph a2ii of this section.

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721.11350 Sulfonated perfluoropolyether aryl alkali metal salt generic.

a Chemical substance and significant new uses subject to reporting.
1 The chemical substance identified generically as sulfonated perfluoropolyether aryl alkali metal salt PMN P16155 is subject to reporting
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under this section for the significant new uses described in paragraph a2
of this section.
2 The significant new uses are:
i Hazard communication.
Requirements as specified in 721.72a through f, g3i and ii, g4i and iii, and g5. Alternative hazard and warning statements that meet the criteria of the Globally Harmonized System and OSHA Hazard Communication Standard may be used.
For purposes of 721.72e, the concentration is set at 1.0%.
ii Industrial, commercial, and consumer activities. Requirements as specified in 721.80k and t.
iii Disposal. Requirements as specified in 721.85a1, b1, and c1. Incineration must be hazardous waste high temperature incineration where the treatment efficiency is no less than 99.99%.
iv Release to water. Requirements as specified in 721.90a1, b1, and c1.
b Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph.
1 Recordkeeping. Recordkeeping requirements as specified in 721.125a through c and f through k are applicable to manufacturers and processors of this substance.
2 Limitation or revocation of certain notification requirements. The provisions of 721.185 apply to this section.
3 Determining whether a specific use is subject to this section. The provisions of 721.1725b1 apply to paragraph a2ii of this section.
15. Add 721.11360 to read as follows:
721.11360 Benzenepropanal, .alpha alpha.,3-trimethyl-.

a Chemical substance and significant new uses subject to reporting.
1 The chemical substance identified as benzenepropanal, .alpha alpha.,3trimethylPMN P18129; CAS No.
107737973 is subject to reporting under this section for the significant new uses described in paragraph a2
of this section.
2 The significant new uses are:
i Industrial, commercial, and consumer activities. Requirements as specified in 721.80t.
ii Reserved b Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph.
1 Recordkeeping. Recordkeeping requirements as specified in 721.125a through c and i are
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applicable to manufacturers and processors of this substance.
2 Limitation or revocation of certain notification requirements. The provisions of 721.185 apply to this section.
3 Determining whether a specific use is subject to this section. The provisions of 721.1725b1 apply to paragraph a2i of this section.
16. Add 721.11361 to read as follows:
721.11361
generic.

Multiwalled carbon nanotubes
a Chemical substance and significant new uses subject to reporting.
1 The chemical substance identified generically as multiwalled carbon nanotubes PMN P18182 is subject to reporting under this section for the significant new uses described in paragraph a2 of this section. The requirements of this section do not apply to quantities of the substance that have been:
i Embedded or incorporated into a polymer matrix that itself has been reacted cured;
ii Embedded in a permanent solid/
polymer form that is not intended to undergo further processing, except mechanical processing; or iii Incorporated into an article as defined at 40 CFR 720.3c.
2 The significant new uses are:
i Protection in the workplace.
Requirements as specified in 721.63a1, 3 through 6, and c.
When determining which persons are reasonably likely to be exposed as required for 721.63a1 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 721.63a5, respirators must provide a National Institute for Occupational Safety and Health NIOSH assigned protection factor APF of at least 50. For purposes of 721.63a6, the airborne forms of the substance include particulate.
ii Industrial, commercial, and consumer activities. It is a significant new use to use an application method that generates a dust, mist, or aerosol, unless such application method occurs in an enclosed process. It is a significant new use to use the substance other than for heat transfer, heat storage, thermal emission, and general temperature management in heat-generating systems such as electronics, to improve mechanical properties or electrical conductivities of other materials or
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