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Federal Register / Vol. 86, No. 107 / Monday, June 7, 2021 / Rules and Regulations
ii Industrial, commercial, and consumer activities. Requirements as specified in 721.80f and l. In addition, a significant new use of the substance is importation of the chemical substance if:
A Manufactured by other than the method described in premanufacture notice P90226 and significant new use notices P961408, S086, S094, S1349, S165, and S176.
B Manufactured producing respirable, acicular fibers with an average aspect ratio of greater than 5.
The average aspect ratio is defined as the ratio of average length to average diameter. For manufacture of S176:
Manufacture with a particle size distribution containing greater than 30% of particles less than 10 microns.
b
1 Recordkeeping. Recordkeeping requirements as specified in 721.125a through d and i are applicable to manufacturers and processors of this substance.

4. Amend 721.10288 by revising paragraphs a1 and a2i to read as follows:
721.10288 Cyclohexane, oxidized, byproducts from, distn. residues.

a 1 The chemical substance identified as cyclohexane, oxidized, byproducts from, distn. residues PMN P
11316; CAS No. 1014979920 is subject to reporting under this section for the significant new uses described in paragraph a2 of this section.
2
i Release to water. Requirements as specified in 721.90a4, b4 and c4, where N=470.

5. Amend 721.10432 by:
a. Revising paragraphs a1, a2i and a2ii;
b. Adding paragraphs a2iii and iv; and c. Revising paragraph b1.
The revisions and additions read as follows:

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721.10432 1,2,4,5,7,8-Hexoxonane, 3,6,9triethyl-3,6,9-trimethyl-.

a 1 The chemical substance identified as 1,2,4,5,7,8-hexoxonane, 3,6,9-triethyl-3,6,9-trimethylPMN P
981028 and SNUNs S149, S1712, and S1715; CAS No. 24748230 is subject to reporting under this section for the significant new uses described in paragraph a2 of this section.
2
i Protection in the workplace.
Requirements as specified in 721.63a1, a3 through 5,
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a6v, b, 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 assigned protection factor of at least 50.
For purposes of 721.63b, the concentration is set at 1.0%.
ii Hazard communication.
Requirements as specified in 721.72a through f, g1 through 3, g4i, and g5. For purposes of 721.72e, the concentration is set at 1.0%. For purposes of 721.72g1, the required human health hazard statements include: Internal organ effects;
reproductive effects; allergic skin reaction. For purposes of 721.72g2, the required human health precautionary statements include: Use skin protection; where engineering controls are not determined to be adequate, use respiratory protection. For purposes of 721.72g3, the required environmental hazard statements include: This substance may cause long lasting harmful effects to aquatic life.
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. It is a significant new use to process or use the substance with an application method that generates a mist, vapor, or aerosol.
iv Release to water. Requirements as specified in 721.90a4, b4 and c4, where N=56.
b
1 Recordkeeping. Recordkeeping requirements as specified in 721.125a through i, and k are applicable to manufacturers and processors of this substance.

6. Amend 721.10907 by revising paragraphs a1 and a2i to read as follows:
721.10907
generic.

Polyfluorohydrocarbon
a 1 The chemical substance identified generically as polyfluorohydrocarbon PMN P15326
and SNUN S1711 is subject to reporting under this section for the significant new uses described in paragraph a2 of this section.
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i Industrial commercial, and consumer activities. Requirements as specified in 721.80o. It is a significant new use to use the substance other than for the confidential uses described in PMN P15326 and SNUN
S1711.

7. Amend 721.10922 by:
a. Revising paragraphs a1, a2i and a2ii;
b. Adding paragraphs a2iii and iv;
c. Revising paragraph b1; and d. Removing paragraph b3.
The revisions and additions read as follows:
721.10922 1,2,4,5,7,8-Hexoxonane, 3,6,9trimethyl-, 3,6,9-trisalkyl derivs. generic.

a 1 The chemical substance identified generically as 1,2,4,5,7,8hexoxonane, 3,6,9-trimethyl-, 3,6,9trisalkyl derivs. PMN P15607 and SNUN S1713 is subject to reporting under this section for the significant new uses described in paragraph a2
of this section.
2
i Protection in the workplace.
Requirements as specified in 721.63a1, a3 through 5, a6v, b, 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 assigned protection factor of at least 50.
For purposes of 721.63b, the concentration is set at 1.0%.
ii Hazard communication.
Requirements as specified in 721.72a through f, g1 through 3, g4i, and g5. For purposes of 721.72e, the concentration is set at 1.0%. For purposes of 721.72g1, the required human health hazard statements include: Internal organ effects;
reproductive effects; allergic skin reaction. For purposes of 721.72g2, the required human health precautionary statements include: Use skin protection; where engineering controls are not determined to be adequate, use respiratory protection. For purposes of 721.72g3, the required environmental hazard statements include: This substance may cause long lasting harmful effects to aquatic life.
Alternative hazard and warning statements that meet the criteria of the
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