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Hazard Classes

For purposes of transportation and shipping, each hazardous material is assigned to a hazard class. The list that follows provides examples of items that are subject to mailing restrictions or prohibitions.

 

Hazard Classes

Examples

Class 1:

Explosives

Fireworks, ammunition, fuses, model rocket engines, automobile air bags

Class 2:

Gases

Aerosols, hairspray, scuba tanks, compressed gas containers, lighters, butane, propane

Class 3:

Flammable Liquids

Fuels (gasoline), items that contain or used to contain fuel (lighters, propane cylinders, used gasoline tanks), some paints and inks, furniture varnishes, perfumes

Class 4:

Flammable Solids

Matches, signal flares

Class 5:

Oxidizers and Organic

Peroxides

Oxidizing liquids, swimming pool chemicals, peroxides

Class 6:

Toxic Materials and Infectious Substances

Insecticides, pesticides, pepper spray, flea collars, infectious substances, sharps, patient specimens

Class 7:

Radioactive Materials

Scientific instruments, products requiring a radioactive warning label

Class 8:

Corrosives

Bleach, ammonia, batteries, drain cleaners, mercury, oven cleaners

Class 9:

Miscellaneous Hazardous

Materials

Magnets, dry ice, self-inflating lifesaving devices, lithium and lithium-ion batteries

Just because an item is NOT on this list does not mean that the item is mailable — be sure to ask before mailing any items that could be considered hazardous.




Link to "Laws That Keep Us Safe" Link to contents for "The Safety of the Mail is Everyone’s Responsibility"      Link to "Recognizing Domestic Hazardous Materials"