Division 4.2 is spontaneously combustible material.
Class 4 Division 2, more often called Division 4.2, is for spontaneously combustible materials
Class 4 Division 2, more often called Division 4.2, is for spontaneously combustible materials
DOT division 4.1 is for flammable solids.
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.
Flammable Solid
DOT Division 2.2 is for nonflammable compressed gases.
Class 4 division 1 (more properly called Division 4.1) is for flammable solids.
division 4.1 is flammable solids
Class 4 division 3 (more properly called Division 4.3) is a Dangerous When Wet Material.
"Non-flammable compressed gas" is the formal terminology. This class/division includes carbon dioxide (co2) cylinders, air tanks, and many industrial gasses described as "inert". Flammable gasses/aerosols, and toxic gasses/aerosols are also in class 2, but different divisions (2.1, and 2.3 respectively)
DOT Hazard Class 4 is for flammable solids such as magnesium metal.