---
kind: "section"
citation: "40 C.F.R. § 721.10573"
title: "40"
number: "721.10573"
heading: "Magnesium hydroxide surface treated with substituted alkoxysilanes (generic)."
url: "https://uscodex.org/cfr/40/721.10573"
---

# §721.10573. Magnesium hydroxide surface treated with substituted alkoxysilanes (generic).

- (a) **Chemical substance and significant new uses subject to reporting.**
  - (1) The chemical substance identified generically as magnesium hydroxide surface treated with substituted alkoxysilanes (PMN P-08-737) 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)(6)(i)](/cfr/40/721.63.md?p=a-6-i), [(b)](/cfr/40/721.63.md?p=a-6-b)(concentration set at 0.1 percent), and (c). The following National Institute for Occupational Safety and Health (NIOSH)-certified respirators with an assigned protection factor (APF) of at least 10 meet the requirements of [§ 721.63(a)(4)](/cfr/40/721.63.md?p=a-4):
      - (A) NIOSH-certified air-purifying, tight-fitting half-face respirator equipped with N100 (if oil aerosols absent), R100, or P100 filters.
      - (B) NIOSH-certified air-purifying, tight-fitting full-face respirator equipped with N100 (if oil aerosols absent), R100, or P100 filters.
      - (C) NIOSH-certified powered air-purifying respirator equipped with a loose-fitting hood or helmet and high efficiency particulate air (HEPA) filters.
      - (D) NIOSH-certified powered air-purifying respirator equipped with a tight-fitting facepiece (either half-face or full-face) and HEPA filters.
      - (E) NIOSH-certified supplied-air respirator operated in pressure demand or continuous flow mode and equipped with a hood or helmet, or tight-fitting facepiece (either half-face or full-face).
    - (ii) **Hazard communication program.** Requirements as specified in § [72l.72(a)](/cfr/40/72l.72.md?p=a), [(b)](/cfr/40/72l.72.md?p=b), [(c)](/cfr/40/72l.72.md?p=c), [(d)](/cfr/40/72l.72.md?p=d), [(e)](/cfr/40/72l.72.md?p=e)(concentration set at 0.1 percent), (f), (g)(l)(ii), (g)(l)(viii), and (g)(2)(iv).
    - (iii) **Industrial, commercial, and consumer activities.** Requirements as specified in [§ 721.80(s)](/cfr/40/721.80.md?p=s) (100,000 kilograms).
- (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 [(i)](/cfr/40/721.125.md?p=i) 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

[77 FR 61146, Oct. 5, 2012]

### Authority

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

### Source

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

### Amendments

[77 FR 61146, Oct. 5, 2012]