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In the scheme used for transport of hazardous materials there are eight (8) classes of hazardous materials.
In the context of hazardous material (dangerous goods) a division or class is a number identifying the hazard category of a hazardous material (dangerous good). There are nine hazard classes, several of which are subdivided into divisions.
9 classes.
Class A ; compressed gas Class B ; combustible and flammeble material Class C ; Oxidizing material Class D1 ; Poisonous and Infectionous materials Class D2 ; Poisnous and Infectionous materials Class D3 ; Poisnous and Infectionous materials
If I am remembering my science classes correctly blue or black coloring indicated the presence of starch.
All classes of hazardous materials require special handling. Explosives and radioactive materials usually get more attention in that regard.
In the context of hazardous material (dangerous goods) a division or class is a number identifying the hazard category of a hazardous material (dangerous good). There are nine hazard classes, several of which are subdivided into divisions.
There are three (3) packaging groups in the DOT regulations for shipping hazardous materials. Note, however, that some hazard classes have no packaging groups.
There are several classes of hazardous material. Miscellaneous hazardous material belongs to hazard class 9, and appropriate labeling and handling should adhere to the Hazmat shipping procedures.
They can be signed by an authorized representative of the generator as long as they have received RCRA and/or DOT training. These can be as intensive as Hazwoper classes or as basic as simple 4-hour training sessions.
4 Classes of Fire.CLASS A(ORDINARY COMBUSTIBLES)CLASS B(FLAMMABLE LIQUIDS & GASES)CLASS C(ELECTRICAL EQUIPMENTS)CLASS D(COMBUSTIBLE METALS)CLASS K(COOKING OILS & FATS)
Straight classes are better than split classes because they just are.