Examples of Division 2.1 materials (flammable gases) include:
Hazard division 2.1 contains flammable gases.
4.1 Flammable solids
4.2 Substances liable to spontaneous combustion
4.3 Substances that emit flammable gases in contact with water
Division 1.3 is predominately a fire hazard, with a minor blast hazard.
Class 4 Division 1 (more properly called Division 4.1) is for flammable solids.
Class 4 division 1 (more properly called Division 4.1) is for flammable solids.
Explosives that have no explosive hazard are not explosives. Materials that have a fire hazard but no explosive hazard are Class 2 if they are gasses, class 3 if they are liquids, and class 4 if they are solids.
Poisonous materials are found in DOT division 6.1.
The DOT classification for Spontaneously Combustible material is Division 4.2
DOT Hazard Class 4 is for flammable solids such as magnesium metal.
DOT class 8 are corrosive.
Dangerous When Wet materials are in Division 4.3
Class 4 division 3 (more properly called Division 4.3) is a Dangerous When Wet Material.
Class 4 Division 2, more often called Division 4.2, is for spontaneously combustible materials
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