Hazard Communication

Per GHS, hazards need to be communicated:

  • in more than one form (for example, placards, labels or SDS’s).
  • with hazard statements and precautionary statements.
  • in an easily comprehensible and standardized manner.
  • consistent with other statements to reduce confusion.
  • taking into account all existing research and any new evidence.

Comprehensibility is challenging for a single culture and language, so global harmonization is complex. The GHS Purple Book includes a comprehensibility-testing instrument in Annex 6. Factors that were considered in developing the GHS communication tools include:

  • Different philosophies in existing systems on how and what should be communicated;
  • Language differences around the world;
  • Ability to translate phrases meaningfully;
  • Ability to understand and appropriately respond to pictograms.