Chemical Labelling Requirements: GHS Standards and Global Compliance

What is GHS and Why It Matters

The Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was developed by the United Nations to create a globally standardized approach for identifying chemical hazards and communicating them through labels and Safety Data Sheets (SDS). GHS stands for the Globally Harmonized System of Classification and Labelling of Chemicals, introduced by the United Nations as a way to standardize classification and labelling of chemical products worldwide.

GHS is Not Law Itself, Implementation Is

GHS is the UN model; it becomes law in the EU through the CLP Regulation — Regulation (EC) No 1272/2008 — and in Great Britain through GB CLP. In the United States, GHS principles are implemented through the Hazard Communication Standard (HCS) enforced by OSHA. More than 65 countries have embraced the United Nations' GHS label requirements.

GHS is not a law. It becomes enforceable only when adopted into national regulation, which is why implementation dates and revisions differ by region.

The Six Required Elements of a GHS Label

Every GHS-compliant label must include all six required elements. GHS labels require six elements in order to be compliant. GHS-compliant labels don't always look exactly the same, but six specific requirements must always be followed.

1. Product Identifier

Product identifier, supplier information, plus nominal quantity when product is sold to public. Must match SDS Section 1 and allow traceability to the chemical.

2. Supplier Identification

Supplier Identification: Contact information for chemical manufacturer, including telephone number, name, and address. Chemical manufacturers, importers and distributors must use labels that include harmonized signal word, pictograms, and hazard statement.

3. Hazard Pictograms

Nine diamond pictograms with red border for physical, health, and environmental hazards. Used to convey hazard at a glance across languages.

4. Signal Word

Signal Word — Danger for severe hazards, Warning for less severe. Only one signal word per label, based on highest severity.

5. Hazard Statements

Hazard Statements: set of descriptive standard statements that describe hazards associated with chemical, e.g. H225 Highly flammable liquid and vapour. Must be harmonized codes from GHS classification.

6. Precautionary Statements

Precautionary statements for prevention, response, storage, and disposal — e.g. P210 Keep away from heat. Plus supplemental information where required by local law.

Global Implementation Differences

United States – OSHA HazCom Rev 7

OSHA's Final Rule published May 20, 2024 updated Hazard Communication Standard to align with GHS Revision 7, tightening requirements for label content and format. Under 29 CFR 1910.1200, failing to comply can result in penalties. In 2012, GHS labels were officially made part of OSHA's required hazard communication standards.

Labels are required to be updated within 180 days of supplier being made aware of any new information and revised data.

Europe and UK – CLP / GB CLP

GHS label carries fixed set of elements: product identifier, supplier, pictograms, signal word, hazard and precautionary statements, plus nominal quantity when sold to public. Key GHS implementation date: 1 June 2015; all mixtures have to be classified and labelled in accordance with EU CLP regulation/GHS since above date.

Other Regions – BS 5609 and Transport

BS 5609 is a different question: marine standard for packages shipped by sea. For transport, GHS workplace labels differ from transport labels under UN Model Regulations, IMDG, IATA. Both may be required on same package.

Compliance Best Practices for Suppliers

Classification First, Label Second

Chemical labels aren't just important — they're required by OSHA's Hazard Communication Standard (HCS or HazCom). GHS label elements are six standardized components required on every hazardous chemical label under GHS, adopted by UN in 2003 and implemented in US through OSHA Hazard Communication Standard.

Classify substance/mixture correctly for physical, health, environmental hazards, then build label from classification. Keep SDS and label consistent.

Update, Language and Legibility

Labels must be in official language of market, legible, durable, and firmly affixed. Update within 180 days of new hazard data. For small packages, fold-out labels and tie-on tags allowed under CLP where space limited.

Practical Checklist for Buyers

Check supplier SDS Section 2 matches label, pictograms present, signal word correct, precautionary statements complete, and supplier contact present. For imports to EU, ensure CLP Annex II compliance; for US, ensure HazCom 2024 Rev 7 compliance.

Sources:

GHS Label Compliance: Why It Matters – ArrSys – GHS developed by UN to create globally standardized approach, US implemented through OSHA HCS, every label must include all six elements

GHS Label Requirements – DellTech – GHS introduced by UN to standardize classification and labelling worldwide, six elements required, labels updated within 180 days

GHS Label Requirements — CLP Labels and BS5609 – TagsFab – GHS is UN model, becomes law in EU through CLP Regulation (EC) No 1272/2008 and GB CLP