Explosion hazards labeling codes

Explosive chemicals tend to be governed by separate legislation, e.g., in the UK, The Classification and Labelling of Explosives Regulations 1983. These require the HSE to classify any explosive before it may be supplied. Under the scheme, explosives are labelled according to a classification based on hazard division (Table 12.7), and on compatibility (Table 12.8), which takes into account their sensitivity, explosivity and chemical nature. Labels are diamond shaped the top half is reserved for the pictograph and division number, the bottom half shows the hazard code and the classification number. Figure 12.1 shows the label for Class 1, Division 1.1, 1.2 or 1.3 explosive. 

An explosive is any substance or device that is designed to function by explosion, such as the extremely rapid release of gas and heat. Class 1 explosives are assigned a division and a compatibility group. The class, division, and compatibility group must be displayed on the hazard label. All explosives, except ammunition, must display an EX number on the package or shipping paper. The EX number is a product code that has been assigned by the associate administrator for hazardous materials. This verifies that the explosive has been... 

---