the classes of dangerous goods according to adr are the following: class 1 explosive substances and articles
class 2 gases
class 3 flammable liquids
class 4.1 flammable solids, self-reactive substances, polymerizing substances and solid desensitized explosives
class 4.2 substances liable to spontaneous combustion
class 4.3 substances which, in contact with water, emit flammable gases class 5.1 oxidizing substances
class 5.2 organic peroxides class 6.1 toxic substances class 6.2 infectious substances class 7 radioactive material class 8 corrosive substances
class 9 miscellaneous dangerous substances and articles