Blog
GHS, CLP and chemical safety for EHS professionals.
CMR Substances in the Workplace: Carcinogens, Mutagens and Reproductive Toxins Under CLP
A practical guide to CMR substances under CLP for EHS managers. Covers classification categories, H-statement codes, concentration thresholds, employer obligations, and substitution requirements under EU law.
GHS Mixture Classification: Bridging Principles Explained
How to classify hazardous mixtures under GHS when no test data is available. A practical guide to bridging principles — dilution, concentration, interpolation, and cut-off thresholds for EHS professionals and chemists.
SVHC Substances Under REACH: What EHS Managers Need to Know
A practical guide to Substances of Very High Concern (SVHC) under REACH. Learn how SVHC status relates to GHS classification, notification obligations, and what EHS managers must do when SVHC substances are present.
Chemical Storage Segregation: GHS Compatibility Rules for Warehouses
Complete guide to chemical storage segregation under GHS. Learn which substances must be separated, compatibility matrix rules, and OSHA/CLP requirements for safe chemical warehousing.
GHS H-Statements: Complete Guide to All Hazard Statement Codes
A complete reference guide to GHS hazard statements (H-codes): H2xx physical hazards, H3xx health hazards, H4xx environmental hazards. How to read, assign, and use H-statements on labels and SDS.
GHS P-Statements: How to Select and Use Precautionary Codes
Complete guide to GHS P-statements (precautionary statements): P1xx, P2xx, P3xx, P4xx, P5xx codes explained. How to select the right P-statements for your chemical label and SDS.
GHS Signal Words: Danger vs Warning — When Each Applies
Learn the difference between GHS signal words Danger and Warning, which hazard categories trigger each, and how signal words appear on chemical labels under GHS/CLP/OSHA HCS.
GHS vs OSHA HCS 2024: What Changed for US Chemical Labelling
OSHA updated HCS in 2024 to align with GHS Rev.7. Learn what changed in hazard classification, label requirements, SDS format, and compliance deadlines for US chemical manufacturers and importers.
How to Calculate ATE for Chemical Mixtures (GHS Formula)
Step-by-step guide to calculating Acute Toxicity Estimate (ATE) for chemical mixtures using the GHS additivity formula. Includes worked examples.
GHS Hazard Symbols and Meanings: The Complete Reference
A complete reference for all GHS hazard symbols and their meanings — pictograms, signal words, H-statements, and what each symbol tells you about a chemical's risks.
GHS Health Hazard Symbol: What It Means and When It Applies
The GHS health hazard symbol (GHS08) indicates carcinogens, mutagens, reproductive toxins, STOT, and aspiration hazards. Learn which H-statements trigger it and how to identify affected chemicals.
GHS Pictograms: Complete Guide for EHS Professionals
A complete guide to all 9 GHS hazard pictograms — what they mean, when to use them, and how CLP regulation applies in the EU.
What Are GHS Symbols? Complete Guide to Hazard Pictograms
GHS symbols are standardized hazard pictograms used on chemical labels worldwide. Learn what each of the 9 symbols means, their history, and how they apply in the EU and USA.