---
kind: "section"
citation: "40 C.F.R. § 721.2725"
title: "40"
number: "721.2725"
heading: "Trichlorobutylene oxide."
url: "https://uscodex.org/cfr/40/721.2725"
---

# §721.2725. Trichlorobutylene oxide.

- (a) **Chemical substance and significant new use subject to reporting.**
  - (1) The chemical substance trichlorobutylene oxide (TCBO), CAS Number 3083-25-8, [Listed in TSCA Inventory as oxirane, (2,2,2-trichloroethyl)-] is subject to reporting under this section for the significant new use described in [paragraph (a)(2)](#a-2) of this section.
  - (2) **The significant new use is any use.**
- (b) **Special requirements.** The provisions of subpart A of this part apply to this section except as modified by this paragraph.
  - (1) **Persons who must report.** [Section 721.5](/cfr/40/721.5.md) applies to this section except for [§ 721.5(a)(2)](/cfr/40/721.5.md?p=a-2). A person who intends to manufacture, import, or process for commercial purposes the substance identified in [paragraph (a)(1)](#a-1) of this section and intends to distribute the substance in commerce must submit a significant new use notice.
  - (2) [Reserved]

## Notes

### Amendments

[52 FR 41300, Oct. 27, 1987. Redesignated at 53 FR 2845, Feb. 2, 1988. Further redesignated at 58 FR 29946, May 24, 1993, as amended at 58 FR 34204, June 23, 1993]

### Authority

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

### Source

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

### Amendments

[52 FR 41300, Oct. 27, 1987. Redesignated at 53 FR 2845, Feb. 2, 1988. Further redesignated at 58 FR 29946, May 24, 1993, as amended at 58 FR 34204, June 23, 1993]