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Chemical Categorisation

This tool assists the process of ordering chemicals by identifying the correct hazard category to be used on Opera. It requires input of all the Hazard or H-codes, and EUH codes that are shown on the safety data sheet (SDS) for the chemical.

Remember that a chemical may exhibit multiple hazards and that the use of the chemical must be added to your risk assessment for the work which you are undertaking. The risk assessment must also contain the control measures to be used to ensure safe use of the chemical.

H-code and EUH-code input:

Insert all H-codes and EUH-codes here, or tick the check box if the MSDS states that the material is not classified as hazardous:

This material is not classified as hazardous according to regulation (EC) No 1272/2008

University hazard category:

This section provides the Opera hazard category (Low / Medium / High) into which the substance falls.

This information should be loaded into Opera when ordering chemicals. The category is derived from the H-codes provided and takes no account of an increase in the severity of a hazard which may accompany an increase in quantity of a given substance.

The H-code should also be input to the " Comments" box on Opera to confirm that you have checked and understood the hazards associated with this chemical.

Applicable GHS symbols:

Storage categorisation results:

University storage category:


Storage guidance: