picture of hazard warning symbols

Hazard warnings are recognisable symbols that warn us about impending danger that we should be aware of when working in a certain area or with certain materials or chemicals.

The symbols used in hazard warnings let us know many different elements of danger, for example if something is:

  • Flammable
  • Explosive
  • Toxic
  • Corrosive
  • Oxidising
  • Dangerous when wet

These hazard warning signs are regulated by law and come in different shapes and colours to differentiate between types of danger or hazardous materials.

What Is The GHS?

The GHS is the Globally Harmonized System of Classification and Labeling of Chemicals which is an agreement between the United Nations for an international system which meets a consistent criteria throughout the world for labeling hazardous products.

The reason for this system is to have a globally recognised format throughout the world for classifying dangerous materials, substances and other hazards. With this system in place, hazard warnings and symbols will have the same meaning internationally allowing people who come in to contact with products shipped from different countries to be able to read the hazard labels and know exactly what they mean.

This is important as it helps prevent injuries or fatal accidents from a hazard symbol being misunderstood.

Types Of Hazard Symbols

There are many types of different hazard symbols, here are some recognisable ones which can be found on everyday household products and in work environments.

The skull and cross bones symbol is used as a warning of poisonous or toxic substances that can be fatal to humans.

Toxic warning symbol

Any corrosive substances are highly dangerous and should be handled with care, this is the recognised sign which warns if something is corrosive.

Corrosive warning symbol

The flammable sign is something we see a lot in our everyday lives, for example you will find it displayed on deodorant bottles, or hairspray cans. In the work place it can warn of many different flammable materials such as flammable liquids, flammable solids and any combustible materials.

Flammable symbol


To buy hazard warning label signs for your business or work place take a look on the Label Bar website for a range of GHS regulation labels.

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