---
kind: "section"
citation: "40 C.F.R. § 721.10077"
title: "40"
number: "721.10077"
heading: "3H-1,2,4-Triazol-3-one, 1,2-dihydro-."
url: "https://uscodex.org/cfr/40/721.10077"
---

# §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)](#a-2) of this section.
  - (2) **The significant new uses are—**
    - (i) **Protection in the workplace.** Requirements as specified in § [721.63 (a)(4)](/cfr/40/721.63.md?p=a-4), [(a)(5)](/cfr/40/721.63.md?p=a-5), [(a)(6)](/cfr/40/721.63.md?p=a-6), [(b)](/cfr/40/721.63.md?p=a-b), and [(c)](/cfr/40/721.63.md?p=a-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)](/cfr/40/721.63.md?p=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).
    - (ii) **Hazard communication program.** Requirements as specified in § [721.72 (g)(1)(ix)](/cfr/40/721.72.md?p=g-1-ix), [(g)(2)(iv)](/cfr/40/721.72.md?p=g-2-iv), [(g)(3)(ii)](/cfr/40/721.72.md?p=g-3-ii), and [(g)(4)(iii)](/cfr/40/721.72.md?p=g-4-iii).
    - (iii) **Release to water.** Requirements as specified in § [721.90 (a)(1)](/cfr/40/721.90.md?p=a-1), [(b)(1)](/cfr/40/721.90.md?p=b-1), and [(c)(1)](/cfr/40/721.90.md?p=c-1).
- (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 § [721.125 (a)](/cfr/40/721.125.md?p=a), [(b)](/cfr/40/721.125.md?p=b), [(c)](/cfr/40/721.125.md?p=c), [(d)](/cfr/40/721.125.md?p=d), [(f)](/cfr/40/721.125.md?p=f), [(g)](/cfr/40/721.125.md?p=g), [(h)](/cfr/40/721.125.md?p=h), and [(k)](/cfr/40/721.125.md?p=k) are applicable to manufacturers, importers, and processors of this substance.
  - (2) **Limitations or revocation of certain notification requirements.** The provisions of [§ 721.185](/cfr/40/721.185.md) apply to this section.

## Notes

### Amendments

[72 FR 53485, Sept. 19, 2007]

### Authority

Authority: 15 U.S.C. 2604, 2607, and 2625(c).

### Source

Source: 49 FR 35018, Sept. 5, 1984, unless otherwise noted.

### Amendments

[72 FR 53485, Sept. 19, 2007]