HazCom Standard Updated to Align with GHS Rev 7 — What Actually Changes
OSHA's final rule aligning the Hazard Communication Standard with the 7th edition of the UN Globally Harmonized System of Classification and Labelling of Chemicals is now in effect. Significant changes include new hazard classes, revised label requirements, and updated SDS formatting.
Background
OSHA's Hazard Communication Standard (HazCom, 29 CFR 1910.1200) was last majorly revised in 2012 to align with GHS Rev 3. The new rule updates the standard to GHS Rev 7, the current international edition.
Key Changes
New Hazard Classes
- Desensitized Explosives — new class with specific labeling requirements
- Flammable Gases expanded with new subcategories
- Aerosols — updated classification criteria
Revised Label Requirements
- Precautionary Statements have been extensively revised
- Signal words, pictograms, and hazard statements updated for several substances
- Date of label revision now encouraged on new labels
SDS Format Updates
- Section 9 (Physical/Chemical Properties) expanded with additional required fields
- Section 11 (Toxicological Information) requires more detail on endocrine disruption and repeated exposure
- SDSs must be updated within 6 months of new hazard information
Compliance Timeline
| Phase | Deadline | Requirement |
|---|---|---|
| Chemical manufacturers/importers | 36 months from effective date | Updated SDSs and labels |
| Distributors | 48 months from effective date | Can ship old stock with new labels |
| Employers | 60 months from effective date | Update workplace hazard communication programs |
Action Items
1. Contact your chemical suppliers for updated SDSs
2. Plan to update your written HazCom program
3. Schedule refresher training when new labels arrive
4. Review secondary container labeling procedures
⚠️ This content is informational only and does not constitute legal advice. For compliance guidance specific to your workplace, consult a qualified EHS professional or attorney.