Australia Model Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace 2.1: 2.1 Identify every chemical used, handled, stored or generated, including by-products and process contents

Identify, in consultation with workers, all chemicals that are or may be used, handled, stored or generated, usually from the label and SDS and the ingredients listed. Some have no label or SDS, such as welding fume. Manufacturers and importers classify chemicals and prepare labels and SDS and must review them for correctness, and a PCBU should read the label together with the SDS. Where no SDS or label is required, product specification sheets and other guidance may show what chemicals are generated. Chemicals inside plant such as piping must also be identified so controls exist for rupture, spill, maintenance or cleaning. Hazardous by-products and waste must be found and managed, for example hydrogen sulphide in a sewer, diesel exhaust, welding fume, metal grinding dust, solvent vapour from glues used in fibreboard and timber machining dust that is both a health and dust explosion hazard.