Control of Substances Hazardous to Health (CoSHH)

University Chemical Hazard Codes

Hazard code 1: Chemicals – Non-hazardous

  • This category is allocated to a chemical substances classified as non-hazardous by the chemical supplier.
  • The label or materials safety data sheet (MSDS) contains no hazard warning words, symbols or phases.
  • There is no action or restriction when ordering via the York e Purchase (YEP) System.

Hazard code 2: Chemicals - Hazardous

  • A chemical substance that is classed as hazardous but is not a ‘high hazard’ chemical (see Hazard code 3).
  • The label or MSDS includes hazardous words, symbols or phases but no ‘high hazard’ words(see Appendix 2).
  • There is no action or restriction when ordering via YEP unless a chemical substance is of a higher hazardous classification.

Hazard code 3: Chemicals - Hazardous (High)

  • A chemical substance that capable of causing serious harm if exposure occurred.
  • The label or MSDS includes one or more ‘high hazard’ words, symbols or phases (see Appendix 2).
  • There are management restrictions which require approval/authorisation when ordering via YEP.

Hazard code 4: Chemicals - Hazardous (legally controlled)

  • A chemical substance that is legally controlled and requires approval/authorisation before ordering.
  • The label or MSDS includes one or more ‘high hazard’ words, symbols or phases (see Appendix 2).
  • Legally controlled substances include:
    • Drugs of abuse
    • Drugs precursors schedule 1
    • Explosives requiring license
    • Schedules 1, 2 (chemical weapons and precursors)
    • Schedule 3 (precursors)

There are management restrictions which require an approval/authorisation by the license holder and Head of Department when ordering via YEP.

by WSDOT, Flickr