GHS hazard statement

Hazard statements form part of the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). They are intended to form a set of standardized phrases about the hazards of chemical substances and mixtures that can be translated into different languages. As such, they serve the same purpose as the well-known R-phrases, which they are intended to replace.

Hazard statements are one of the key elements for the labelling of containers under the GHS, along with:

Each hazard statement is designated a code, starting with the letter H and followed by three digits. Statements which correspond to related hazards are grouped together by code number, so the numbering is not consecutive. The code is used for reference purposes, for example to help with translations, but it is the actual phrase which should appear on labels and safety data sheets.

The European Union has implemented the GHS through the CLP Regulation. Nevertheless, the older system based on the Dangerous Substances Directive wase used in parallel until June 2015. Some R-phrases which do not have simple equivalents under the GHS have been retained under the CLP Regulation: the numbering mirrors the number of the previous R-phrase.

Some other hazard statements intended for use in very specific circumstances have also been retained under the CLP Regulation. Note that, in this case, the numbering of the EU specific hazard statements can coincide with GHS hazard statements if the "EU" prefix is not included.

The GHS was adopted in Australia from 1 January 2012 and becomes mandatory in States and Territories that have adopted the harmonised Work Health and Safety laws (other than Victoria and Western Australia) as of 1 January 2017. The National Code of Practice for the Preparation of Safety Data Sheets for Hazardous Chemicals includes 12 Australian-specific GHS Hazard Statements, as follows:

As of March 2009, the relevant New Zealand regulations under the Hazardous Substances and New Organisms Act 1996 do not specify the exact wording required for hazard statements. However, the New Zealand classification system includes three categories of environmental hazard which are not included in the GHS Rev.2:

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