This standard applies to the classification and labeling for self-reactive substances and mixtures. The current version is an update of its initial one published on 12 Oct 2006, based on Globally Harmonized System of Classification and Labeling of Chemicals, ST/SG/AC. 10/31/Rev.2 (GHS Rev.2 released in 2007).

Self-reactive substances and mixtures are thermally unstable liquid or solid substances or mixtures liable to undergo a strongly exothermic decomposition even without participation of oxygen (air).

A self-reactive substance or mixture is regarded as possessing explosive properties when in laboratory testing the formulation is liable to detonate, to deflagrate rapidly or to show a violent effect when heated under confinement.