Data / Federal rules / 2024-25971

Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds-Exclusion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z))

The Environmental Protection Agency published this proposed rule in the Federal Register on November 12, 2024. Comments closed on January 13, 2025.

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What the agency says

The U.S. Environmental Protection Agency (EPA) is proposing to revise the EPA's regulatory definition of volatile organic compounds (VOC) under the Clean Air Act (CAA). This action proposes to add (Z)-1- chloro-2,3,3,3-tetrafluoropropene (also known as HCFO-1224yd(Z); CAS number 111512-60-8) to the list of compounds excluded from the regulatory definition on the basis that this compound makes a negligible contribution to tropospheric ozone (O<INF>3</INF>) formation.

Key facts

Document number: 2024-25971
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: November 12, 2024
Comments due: January 13, 2025
Dates: Comments must be received on or before January 13, 2025.
Docket: EPA-HQ-OAR-2023-0295; FRL-10823-01-OAR
Regulation ID (RIN): 2060-AW00
Code of Federal Regulations: 40 CFR 51
Topics: Administrative practice and procedure; Air pollution control; Environmental protection; Ozone; Reporting and recordkeeping requirements; Volatile organic compounds
Pages: 8

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on administrative practice and procedure · Rules on air pollution control · Rules on environmental protection · Published in November 2024

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.