Dangerous goods are divided into various classes. These classes are based on the main dangers the dangerous goods can cause. There are also sub-classes that describe the secondary dangers.
|Class 1||Explosive substances and items containing explosive substances|
|Class 2.1||Inflammable gases|
|Class 2.2||Non-inflammable gases|
|Class 2.3||Toxic gases|
|Class 3||Combustible liquid substances|
|Class 4.1||Combustible solid substances|
|Class 4.2||Self-igniting substances|
|Class 4.3||Substances which generate combustible gases when in contact with water|
|Class 5.1||Substances with an inflammatory (oxidizing) effect|
|Class 5.2||Organic peroxides|
|Class 6.1||Poisonous substances|
|Class 6.2||Infective substances|
|Class 7||Radioactive substances|
|Class 8||Corrosive substances|
|Class 9||Various dangerous substances and items|
The rules and regulations used when dealing with dangerous goods are built up on the basis of assigning the goods to a specific class, group and material identification number – the UN number. Using these designations, as well as other descriptive information such as weight and packaging units, all other important regulations, behaviour and requirements for the transport can be correctly specified.
It is the (original) consignor of goods for transport who decides whether the goods to be transported are dangerous goods and, if so, how they should be classified.
The consignor is familiar with the goods to be transported and the substances they contain, and can thus undertake a correct classification. If the manufacturer and the consignor are not one and the same, the manufacturer must provide the consignor with the necessary information. The consignor must pass on the necessary information to all further participants in the transport of the goods.
Certain categories of dangerous goods can only be transported when they have been specifically cleared for transport by name.