About the HSNO classification system
The HSNO hazard classifications are specified in the Hazardous Substances (Classification) Regulations 2001.
They are represented by:
- numbers (identifying the class and subclass of hazard)
- a letter (ranking the hazard), and
- an associated hazard phrase.
Example: 3.1C Flammable liquids: Medium hazard.
About the classifications and GHS correlations
The HSNO hazard classification system is similar to the United Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
You can read about the correlation between the two classification categories in the infosheet below:
Correlation between GHS and NZ HSNO Hazard Classes and Categories (pdf, 121 kb)
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