The Globally Harmonized System of Classification and Labelling of Chemicals (GHS) is the culmination of more than a decade of work in order to develop a single, globally harmonized system to address classification of chemicals, labels, and safety data sheets.

It is expected that GHS will:

• Enhance the protection of human health and the environment by providing an internationally comprehensible system for hazard communication;
• Provide a recognized framework for those countries without an existing system;
• Reduce the need for testing and evaluation of chemicals; and
• Facilitate international trade in chemicals whose hazards have been properly assessed and identified on an international basis.

While governments, regional institutions and international organizations are the primary audiences for the GHS, it also contains sufficient context and guidance for those in industry who will ultimately be implementing the national requirements which are adopted. Availability of information about chemicals, their hazards, and ways to protect people, will provide the foundation for national programs for the safe management of chemicals. Widespread management of chemicals in countries around the world will lead to safer conditions for the global population and the environment, while allowing the benefits of chemical use to continue. Harmonization will also have benefits in terms of facilitating international trade, by promoting greater consistency in the national requirements for chemical hazard classification and communication that companies engaged in international trade must meet.

GHS will be implemented at the same time as the implementation of REACH, as the two systems are closely connected. The proposed regulation will complement the new REACH Regulation. The proposal on GHS will undergo co-decision, seeking agreement of the European Parliament and the Council. After entry into force the deadline for substance reclassification will be 1 December 2010 and for mixtures 1 June 2015