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§ 721.4100 Tris(disubstituted alkyl) heterocycle.
(a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified generically as tris(disubstituted alkyl) heterocycle (P-90-142) 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)(4), (a)(5)(iv), (a)(6)(i), (b) (concentration set at 0.1 percent) and (c).