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Globally Harmonized System (GHS) for Classification and Labelling of Chemicals

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Symbol of skull and crossbones in a red diamond-shaped warning border indicates that the chemical may be toxic or fatalSymbol of a exclamation mark in a red diamond-shaped warning border that will appear on chemicals with less severe toxicity Symbol in a red diamond-shaped warning border that will appear on chemicals that have corrosive properties Symbol in a red diamond-shaped warning border that will appear on chemicals which are acutely hazardous to fish, crustacea, or aquatic plantsSymbol of a flame in a red diamond-shaped warning border that will appear on chemicals that are flammable.

GHS Pictograms that would be most commonly used on pesticide labels.


The Globally Harmonized System (GHS) of Classification and Labelling of Chemicals is a worldwide initiative to promote standard criteria for classifying chemicals according to their health, physical and environmental hazards. It uses pictograms, hazard statements, and the signal words “Danger” and “Warning” to communicate hazard information on product labels and safety data sheets in a logical and comprehensive way. The primary goal of GHS is better protection of human health and the environment by providing chemical users and handlers with enhanced and consistent information on chemical hazards.

Elements of GHS
Implementation of GHS

The Benefits of GHS

Enhance the protection of human health and the environment: Consistent and widespread use of GHS will enhance protection of human health and the environment by providing an internationally comprehensible system for hazard communication. GHS will help ensure more consistency in the classification and labeling of all chemicals, thereby improving and simplifying hazard communication. This improved communication system will alert the user to the presence of a hazard and the need to minimize exposure and risk, resulting in safer transportation, handling and use of chemicals.

Promote sound management of chemicals worldwide: GHS will provide a harmonized basis for the first step in the sound management of chemicals, identifying  hazards, and communicating them. This will be particularly useful for countries without well-developed regulatory systems.

Facilitate Trade: GHS will reduce costly and time-consuming activities needed to comply with multiple classification and labeling systems, promoting more consistency in regulation and reducing non-tariff barriers to trade.

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