# 40 C.F.R. § 63.64 (2026): Additions of substances to the list of hazardous air pollutants

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_64

## Section

- **Citation:** 40 C.F.R. § 63.64 (2026)
- **Heading:** Additions of substances to the list of hazardous air pollutants
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 40 CFR: Protection of Environment / Chapter I / Part 63 / Subpart C / § 63.64: § 63.64   Additions of substances to the list of hazardous air pollutants.

## Text

(a) The substance 1-bromopropane, or 1-BP, also known as n-propyl bromide or nPB (CAS No. 106-94-5) is added to the list of hazardous air pollutants established by Clean Air Act (CAA) section 112(b)(1), 42 U.S.C. 7412(b)(1). (b) [Reserved] [87 FR 396, Jan. 5, 2022]

## Nearby sections

- [40 C.F.R. § 63.60 (2026) § 63.60   Deletion of caprolactam from the list of hazardous air pollutants.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_60.md)
- [40 C.F.R. § 63.61 (2026) § 63.61   Deletion of methyl ethyl ketone from the list of hazardous air pollutants.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_61.md)
- [40 C.F.R. § 63.62 (2026) § 63.62   Redefinition of glycol ethers listed as hazardous air pollutants.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_62.md)
- [40 C.F.R. § 63.63 (2026) § 63.63   Deletion of ethylene glycol monobutyl ether from the list of hazardous air pollutants.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_63.md)
- [40 C.F.R. § 63.64 (2026) § 63.64   Additions of substances to the list of hazardous air pollutants.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_64.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P63_S63_64. Check the current official text before relying on it. Not legal advice.