Department of Transportation

These are labels or placards that convey hazard information for containers or shipments of hazardous materials. Each label has a characteristic color pattern, pictogram, and hazard class number. There are nine different hazard classes under DOT classification scheme.

Hazard class	Division	Label	Description
Class 1	1.1-1.6	Orange	Explosives
Class 2	2.1	red	Flammable Gases
	2.2	green	Non-Flammable Gases
	2.3	white	Poison Gases
Class 3	N/A	red	Flammable Liquids
Class 4	4.1	red striped	Flammable Solids
	4.2	red top white bottom	Spontaneously Combustible Materials
	4.3	Blue	Dangerous When Wet Materials
Class 5	5.1	yellow	Oxidizers
Class 5	5.2	yellow	organic peroxides
Class 6	6.1	white	Poisons
	6.1	white	Keep away form Foodstuffs
	6.2	White	Infectious Substances
Class 7	N/A	Yellow-top White-bottom	Radioactive
Class 8	N/A	White-top Black-bottom	Corrosive
Class 9	N/A	Blackstriped-top White-bottom	Miscellaneous