The Purple Book

A Guide to GHS Labeling of Chemicals

The GHS is the United Nations’ recommendation for standardizing and harmonizing the classification and labeling of chemicals. The GHS provides a framework for universal communications of hazardous materials.

  • Creates a process of classification for chemicals with defined hazardous criteria.
  • Communicates hazard information, as well as protective measures, on labels and safety data sheets thru the use of universal pictograms.
  • Defines health, physical and environmental hazards of chemicals for a safer workplace and environment.

The United Nations has produced a document detailing the GHS initiative. It fleshes out what the GHS is, how it is to be applied, and a summary of the classification and hazard communication involved.

To download the United Nations latest revision of The Purple Book:

A Guide to the Globally Harmonized System (GHS) of Classification and Labeling of Chemicals, please follow this link to the document.

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