Ch. 10 Hazardous Materials Classification and Identification

Vocabulary terms and definitions related to UN hazard classes, NFPA 704 standards, and transportation identification for hazardous materials.

Class 1

Explosives

Class 2

Gases

Class 3

Flammable liquids

Class 4

Flammable solids; substances liable to spontaneous combustion; substances that emit flammable gases on contact with water

Class 5

Oxidizing substances and organic peroxides

Class 6

Toxic and infectious substances

Class 7

Radioactive materials

Class 8

Corrosive substances

Class 9

Miscellaneous dangerous substances and articles

NFPA 704

Standard System for the Identification of the Hazards of Materials for Emergency Response, which identifies hazards at fixed-storage facilities

NFPA 704 Hazard Categories

Designed to alert responders to health, flammability, instability, and related hazards such as oxidizers and water-reactive materials

Transport of Dangerous Goods - Model Regulations

The United Nations publication that serves as the source for the placarding, labeling, and marking systems in the U.S., Canada, and Mexico

Transportation Labels

Hazard identification markers designed for nonbulk packages

Transportation Placards

Hazard identification markers designed for bulk packages