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The environment may be contaminated by hazardous materials, the diving medium may be inherently a hazardous material, or the environment in which the diving medium is situated may include hazardous materials with a significant risk of exposure to these materials to members of the diving team. Special precautions, equipment and procedures are ...
"Dangerous goods" (also known as "hazardous materials" or "HAZMAT" in the United States) may be a pure chemical substance (e.g. TNT, nitroglycerin), mixtures (e.g. dynamite, gunpowder) or manufactured articles (e.g. ammunition, fireworks). The transport hazards that they pose are grouped into nine classes, which may be subdivided into divisions ...
Division 6.1: Poisonous material is a material, other than a gas, which is known to be so toxic to humans as to afford a hazard to health during transportation, or which, in the absence of adequate data on human toxicity:
HAZMAT 5.1 placard on a pail of UN 2468,Trichloroisocyanuric acid for use in swimming pools. An oxidizer is a material that may, generally by yielding oxygen, cause or enhance the combustion of other materials.
NFPA 704 safety squares on containers of ethyl alcohol and acetone. "NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association.
Each person who offers transportation of hazardous materials must describe the material on accompanied shipping papers. The papers must include— an identification number; a proper shipping name, identified in the Hazardous Materials Table; the hazard class; the packing group, identified in Roman numerals; the total quantity of hazardous materials