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Approaching: Nov 20, 2026 — HCS 2024 Deadline. Get ready →

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Appendix B.3.2

1 OSHA and HazCom article tagged "Appendix B.3.2" — practical, CFR-cited guidance verified against primary sources.

Chemicals Under Pressure: OSHA's New HCS 2024 Hazard Class (Appendix B.3.2) Explained - GHS article thumbnail
GHS

Chemicals Under Pressure: OSHA's New HCS 2024 Hazard Class (Appendix B.3.2) Explained

HCS 2024 adds Chemicals Under Pressure as a new physical hazard class at Appendix B.3.2. What it covers, the pressure threshold, how it differs from aerosols and gases, and the deadlines.

Jun 25, 2026
9 min read
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