The hazard class of dangerous goods is indicated either by its class (or division)
number or name. Placards are used to identify the class or division of a material.
The hazard class or division number must be displayed in the lower corner of a placard
and is required for both primary and subsidiary hazard classes and divisions, if
applicable. For other than Class 7 or the OXYGEN placard, text indicating a hazard
(for example, "CORROSIVE") is not required. Text is shown only in the U.S. The hazard
class or division number and subsidiary hazard classes or division numbers placed
in parentheses (when applicable), must appear on the shipping document after each
proper shipping name.
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Class 1
Explosives
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Division 1.1
Explosives with a mass explosion hazard
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Division 1.2
Explosives with a projection hazard
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Division 1.3
Explosives with predominantly a fire hazard
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Division 1.4
Explosives with no significant blast hazard
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Division 1.5
Very insensitive explosives with a mass explosion hazard
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Division 1.6
Extremely insensitive articles
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Class 2
Gases
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Class 3
Flammable liquids (and Combustible liquids [U.S.])
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Class 4
Flammable solids; Spontaneously combustible materials; and Dangerous when wet
materials/Water-reactive substances
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Class 5
Oxidizing substances and Organic peroxides
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Division 5.1
Oxidizing substances
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Division 5.2
Organic peroxides
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Class 6
Toxic* substances and Infectious substances
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Division 6.1
Toxic* substances
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Division 6.2
Infectious substances
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Class 7
Radioactive materials
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Class 8
Corrosive substances
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Class 9
Miscellaneous hazardous materials/Products, Substances or Organisms