Hazard Class

The U.S. Department of Transportation defines hazardous materials as belonging to one of nine hazard classes.

Hazardous Material Classes

• Class 1- Explosives
• Class 2- Gases
• Class 3- Flammable liquids
• Class 4- Flammable solids
• Class 5- Oxidizers and Organic Peroxides
• Class 6- Toxic Materials and Infectious Substances
• Class 7- Radioactive Materials
• Class 8- Corrosive Materials
• Class 9- Miscellaneous Dangerous Goods