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Division 4.2 is spontaneously combustible material.
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Organic peroxides are classified under DOT Hazard Class 5.2 and oxidizers are classified under Hazard Class 5.1. Organic peroxides are substances that can release oxygen and initiate combustion, while oxidizers are substances that can react exothermically with other materials, often accelerating combustion.
A coal fire is considered a Class A fire, which involves ordinary combustible materials like wood, paper, cloth, and plastics. Class A fires can be extinguished using water, foam, or dry chemical extinguishers.
The five classes of fire are: Class A (ordinary combustibles like wood, paper), Class B (flammable liquids like gasoline, oil), Class C (electrical fires), Class D (combustible metals like magnesium), and Class K (cooking oils and fats).
Explosive materials are in DOT hazard class 1.
Corrosive materials are in Class 8.DOT Hazard Class 8 for corrosives.
The DOT (Department of Transportation) class for radioactive materials is Hazardous. The specific Hazard number will be determined by the exact name of the radioactive materials. Special permits and placarding are needed for vehicles carrying hazardous materials. The DOT class is categorized into 9 classes according to hazardous materials transportation. Class 7 is the general DOT class for radioactive materials.
DOT class 6 division 1 materials consist of poisonous materials.
Flammable solids are DOT Class 4.1 .
Flammable solids are DOT Class 4.1 .
Corrosive materials are in Hazard Class 8.
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Explosive materials
Hazard Class 7 is the class for radioactive materials.
DOT hazard Class 8 contains corrosive materials such as acids and bases.
DOT Hazard Class 4 is for flammable solids such as magnesium metal.