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It’s important you understand COSHH hazard pictograms or symbols and exactly what they mean to protect your people from short or long-term health hazards and the surrounding environment from harm.

In addition to toxic substances, there are several which can cause health hazards irritating the skin and eyes, respiratory tract, and more. This pictogram shows a picture of an exclamation mark. Health hazards are a serious risk to your people, so ensure they all are trained to properly use such chemical products and are given the necessary personal protective equipment.

If you operate in multiple jurisdictions, you have to consider more than just different legal requirements for health...

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From toxic chemicals to flammable substances, hazardous products can be dangerous to your employees and the environment.

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You might be thinking, can I still use the old COSHH hazard symbols? The short answer is no. In 2015, the classification system changed to the new Classification, Labelling, and Package (CLP) regulations and in order to stay compliant, you must use the new COSHH hazard pictograms.

Showing an environment with chemicals that are harmful to species living in water, this pictogram indicates substances which are dangerous for the environment. Make sure all employees carefully use chemicals with this label and dispose of them in the proper way.

This hazard pictogram indicates gases which are stored under pressure, such as ammonia. The symbol depicts a gas cylinder because this is a common example of something that is found at certain organisations. To protect your employees, make sure these cylinders are always checked to avoid a potential leak.

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Now that you know all about hazard pictograms and what they mean, you can give yourself a huge chemical safety pat on the back! If you're ready to explore more, we’ve chosen three resources below that you might find useful.

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It is your responsibility, as the employer, that all employees are aware of the COSHH hazard symbols and meanings if they work with hazardous substances.

This pictogram shows a flame which means this substance is flammable. Substances that can ignite or catch on fire can be very dangerous to your teams, so provide training on how to deal with these products.

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Hazard pictograms must be included on COSHH labels of chemical products as a requirement under the GHS. This standardised system provides a single source of truth so people can fully understand the risks certain substances pose, just by looking at the pictogram.

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Certain substances have the potential to cause serious damage to the health of your people. This pictogram, showing someone with internal damage, is usually found on chemical products that can affect internal organs, fertility, and more.

You might be thinking, what is GHS? GHS or the Globally Harmonized System of Classification and Labelling of Chemicals, is an international standard that is used to classify hazards and label hazardous chemicals.

Below is an example of section two found within a safety data sheet, which includes a hazard pictogram, signal word, and hazard statements:

In addition to hazard pictograms, COSHH labels and safety data sheets can also include hazard statements, precautionary statements, and signal words. Combined, these will help paint a clearer picture of the hazardous substance and how to reduce risk on site.

John runs an old-fashioned sweets company that he started in 2018. Currently, there are three locations across the UK...

There are 9 standard hazard pictograms which are used to depict potential hazards worldwide. Each black symbol is depicted within a red diamond with a white background. This is different from the older symbols which were cast against an orange square.

The skull and crossbones is a familiar symbol to most of us, as this is used to indicate something that is toxic if ingested, inhaled, or absorbed. Provide the proper training on such chemicals so employees are aware and can take the proper steps to avoid harm.

This pictogram, showing a circle which appears to be on fire, indicates that this chemical product can react with others and release oxidising substances. This is dangerous because such chemicals can cause fires or explosions.

Hazard symbols and meanings

Dina is a Content Marketing Manager at EcoOnline who has been writing about health and safety, ESG and sustainability, as well as chemical safety for the past four years. She regularly collaborates with internal subject matter experts to create relevant and insightful content.

These hazard pictograms can keep employees who are working with these substances safe and help you, as the employer, mitigate risks faster with the proper training, controls, and processes in place.

Chemicals that can be extremely harmful to your skin or objects around you are labelled corrosive. This pictogram depicts skin and specific materials that are damaged because of this substance. All employees must learn how to properly use such products and be given the necessary PPE.

Chemical products that have the potential to explode can cause serious risks to your employees. This pictogram shows a bomb exploding, so it’s up to you to provide the necessary training to employees so they know how to handle such a substance.