Explosive materials are in DOT hazard class 1.
Class 1
DOT Division 2.2 is for nonflammable compressed gases.
DOT class 6 division 1 materials consist of poisonous materials.
DOT Class 1 is for explosives and is divided into six divisions.
DOT Class 2, Division 1 (more properly called Division 2.1) is for flammable gases.
Flammable Solid
DOT division 4.1 is for flammable solids.
DOT class 8 are corrosive.
DOT Hazard Class 4 is for flammable solids such as magnesium metal.
Flammable solids are DOT Class 4.1 .
Corrosive materials are in Class 8.DOT Hazard Class 8 for corrosives.