§721.10077 3H-1, 2, 4-Triazol-3-one, 1, 2-dihydro-.

(a) Chemical substance and significant new uses subject to reporting.

(1) The chemical substance identified as 3H-1,2,4-triazol-3-one, 1,2-dihydro-(PMNs P–06–1 and P–06–166; CAS No. 930–33–6) 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:

(a)(2)(i) Protection in the workplace. Requirements as specified in §721.63(a)(4), (a)(5), (a)(6), (b), and (c). Respirators must provide a National Institute for Occupational Safety and Health (NIOSH) assigned protection factor of at least 10. The following NIOSH-approved respirators with an assigned protection factor (APF) of 10– 25 meet the minimum requirements for §721.63(a)(4): Air-purifying, tight-fitting respirator equipped with N100 (if aerosols absent), R100, or P100 filters (either half- or full-face); powered air-purifying respirator equipped with a loose-fitting hood or helmet and High Efficiency Particulate Air (HEPA) filters; powered air-purifying respirator equipped with a tight-fitting facepiece (either half- or full-face) and HEPA filters; and supplied-air respirator operated in pressure demand or continuous flow mode and equipped with a hood or helmet or tight-fitting facepiece (either half- or full-face).

(a)(2)(ii) Hazard communication program. Requirements as specified in §721.72(g)(1)(ix), (g)(2)(iv), (g)(3)(ii), and (g)(4)(iii).

(a)(2)(iii) Release to water. Requirements as specified in §721.90(a)(1), (b)(1), and (c)(1).

(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), (b), (c), (d), (f), (g), (h), and (k) are applicable to manufacturers, importers, and processors of this substance.

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

[72 FR 53485, Sept. 19, 2007]