356Keeping hazardous chemicals stable

356 Keeping hazardous chemicals stable ensure, so far as is reasonably practicable, that a hazardous chemical used, handled or stored at the workplace does not become unstable, decompose or change so as to: (a) create a hazard that is different from the hazard originally created by the hazardous chemical; or (b) significantly increase the risk associated with any hazard in relation to the hazardous chemical. (a) if the stability of a hazardous chemical used, handled or stored at the workplace is dependent on the maintenance of the proportions of the ingredients of the hazardous chemical – the proportions are maintained as stated in the safety data sheet for the chemical or by the manufacturer of the hazardous Work Health and Safety (National Uniform Legislation) Regulations 2011 275 (b) if a hazardous chemical used, handled or stored at the workplace is known to be unstable above a particular temperature – the hazardous chemical is used, handled or stored at or below that temperature. (3) This regulation does not apply if: (a) the hazardous chemical is changed or allowed to become unstable, without risk to health or safety, as part of a deliberate process or activity at the workplace; or (b) the hazardous chemical undergoes a chemical reaction in a manufacturing process or as part of a deliberate process or activity at the workplace.