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DOL/OSHA RIN: 1218-AD55 Publication ID: Spring 2025 
Title: ●1,3-Butadiene 
Abstract:

This proposed rule revises some substance-specific respirator requirements to allow different types of respirators to be used under OSHA’s 1,3-Butadiene standard and better aligns this standard with OSHA’s respiratory protection standard.

 

 
Agency: Department of Labor(DOL)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
EO 14192 Designation: Deregulatory 
CFR Citation: 29 CFR 1910.1051    29 CFR 1917.1    29 CFR 1918.1    29 CFR 1926.55   
Legal Authority: 29 U.S.C. § 651 et seq.    5 U.S.C. 553   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  07/01/2025  90 FR 28247   
NPRM Comment Period End  09/02/2025 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Undetermined 
Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Andrew Levinson
Director, Directorate of Standards and Guidance
Department of Labor
Occupational Safety and Health Administration
200 Constitution Avenue NW, FP Building, Room N-3718,
Washington, DC 20210
Phone:202 693-1950
Email: levinson.andrew@dol.gov