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"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 ...
The NA numbers (North American Numbers are assigned by the United States Department of Transportation, supplementing the larger set of UN numbers, for identifying hazardous materials. NA numbers largely duplicate UN numbers, however a selection of additional numbers are provided for materials that are not covered by UN numbers as a hazardous ...
In the absence of LC 50 data on the poisonous (toxic) constituent substances, the mixture may be assigned a packing group and hazard zone based on simplified threshold toxicity tests. When these threshold tests are used, the most restrictive packing group and hazard zone must be determined and used for the transportation of the mixture.
The GHS transport pictograms are the same as those recommended in the UN Recommendations on the Transport of Dangerous Goods, widely implemented in national regulations such as the U.S. Federal Hazardous Materials Transportation Act (49 U.S.C. 5101–5128) and D.O.T. regulations at 49 C.F.R. 100–185.
There are also long-standing European treaties such as ADR, [15] ADN and RID that regulate the transportation of hazardous materials by road, rail, river and inland waterways, following the guide of the UN model regulations. European law distinguishes clearly between the law of dangerous goods and the law of hazardous materials.
Elon Musk's brain-implant company Neuralink was fined for violating U.S. Department of Transportation (DOT) rules regarding the movement of hazardous materials, according to records from the ...