Rule lifecycle · RIN:1218-AD55
1, 3-Butadiene
Department of Labor, Occupational Safety and Health Administration — observed across 3 documents over 386 days. Use the source documents below before deciding whether this affects your business.
In plain English
OSHA is setting tougher safety limits for how much 1,3-butadiene workers can be exposed to on the job, since this chemical can cause cancer. If your company works with rubber or plastics, you should review your current ventilation systems and worker exposure procedures now, and consider submitting comments before August 21.
First seen
Jul 1, 2025
Last seen
Jul 22, 2026
Latest stage
Proposed Rule
PRORULE → RULE
—
Comments close
Friday, August 21, 2026
Stage timeline
Proposed·Jul 1, 2025
TITLE: 1,3-Butadiene
#2025-11630
Proposed·Aug 20, 2025
1,3-Butadiene
#2025-15899
Proposed·Jul 22, 2026·91 FR 46035
1, 3-Butadiene
comments close Aug 21, 2026#2026-14839