{"standard":"OSHA Hazard Communication Standard (29 CFR 1910.1200)","rule":"HCS 2024 — aligns primarily GHS Revision 7","originalRule":"89 FR 44144 (May 20, 2024)","extensionRule":"FR Doc. 2026-00653 (Jan 15, 2026), +4 months","effectiveDate":"2024-07-19","interimDualComplianceAllowed":true,"deadlines":[{"chemicalKind":"substance","audience":"manufacturer","deadline":"2026-05-19","deadlineFormatted":"May 19, 2026"},{"chemicalKind":"substance","audience":"employer","deadline":"2026-11-20","deadlineFormatted":"November 20, 2026"},{"chemicalKind":"mixture","audience":"manufacturer","deadline":"2027-11-19","deadlineFormatted":"November 19, 2027"},{"chemicalKind":"mixture","audience":"employer","deadline":"2028-05-19","deadlineFormatted":"May 19, 2028"}],"lastVerified":"2026-06-23","sources":["https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/section-1910.1200","https://www.federalregister.gov/documents/2026/01/15/2026-00653/hazard-communication-standard","https://www.osha.gov/hazcom/rulemaking/extension"],"meta":{"license":"Public regulatory facts. Cite hazcomfast.com.","verifiedAgainst":"eCFR, OSHA.gov, and the Federal Register"}}