(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as 1-butanaminium, N,N,N-tributyl-, propyl carbonate (1:1) (PMN P-16-258: CAS No. 1338579-13-7) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section.

(2) The significant new uses are:

(i) Protection in the workplace. Requirements as specified in § 721.63(a)(1) and (3) and (b) (concentration set at 1.0 percent).

(ii) Hazard communication. Requirements as specified in § 721.72(a) through (e) (concentration set at 1.0 percent), (f), (g)(1)(i) and (ii), (g)(2)(i), (ii), (iii), and (v), (g)(3)(i) and (ii), and (g)(5) and Notice to users: Minimize release to water. Alternative hazard and warning statements that meet the criteria of the Globally Harmonized System (GHS) and OSHA Hazard Communication Standard may be used.

(iii) Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(p) (64,000 kilograms aggregate of P-16-255, P-16-256, P-16-257, P-16-258, and P-16-259). It is a significant new use to manufacture, process, or use the substance other than as a blocked catalyst for paints and coatings. It is a significant new use to spray apply the PMN substance where the concentration of any combination of P-16-255, P-16-256, P-16-257, P-16-258, and P-16-259 in the final paint/coating formulation exceeds 1.5% by weight.

(b) Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph (b).

(1) Recordkeeping. Recordkeeping requirements as specified in § 721.125(a) through (i) are applicable to manufacturers and processors of this substance.

(2) Limitations or revocation of certain notification requirements. The provisions of § 721.185 apply to this section.