|Class 1||1.1||Explosives with a mass explosion hazard|
|1.2||Explosives with a severe projection hazard|
|1.3||Explosives with a fire|
|1.4||Minor fire or projection hazard|
|1.5||An insensitive substance with a mass explosion hazard|
|1.6||Extremely insensitive articles|
|Class 2||2.1||Non-Flammable Gases|
|2.4||Toxic and flammable gases|
|Class 3||3.1||Flammable Liquids. Low flash point - liquids with flash point below -18°C|
|3.2||Flammable Liquids. Intermediate flash point - liquids with flash point from -18°C. up to +23°C|
|3.3||Flammable Liquids. High flash point group - liquids with flash point from +23°C|
|Class 4||4.1||Flammable solids|
|4.2||Spontaneously combustible solids|
|4.3||Dangerous when wet|
|Class 5||5.1||Oxidizing agent|
|5.2||Organic peroxide oxidizing agent|
|Class 7||Radioactive substances|
|Class 8||8.1||Corrosive substances having acidic properties|
|8.2||Corrosive substances have basic properties|
|8.3||Corrosive substances other|
|Class 9||9.1||Miscellaneous dangerous substances and articles (Marine pollutants which are not of an otherwise dangerous nature are listed in class 9)|
|9.2||Materials hazardous only in bulk (The regulations for materials hazardous only in bulk are not applicable to these materials when they are carried in closed freight containers, however, many precautions may have to be observed)|
For guidance on the hazardous properties of dangerous goods, as well as their chemical and physical properties or of belonging to a certain group of hazardous substances, used for classification codes, which in themselves reveal the properties of the cargo.
Classification code of dangerous goods is a letter (s) is (their) hazardous property group, which may be supplemented by figures on the physical or chemical properties of the goods or their affiliation with a particular group of chemicals.
For dangerous substances or articles of Hazard Class 1, the code consists of a division number and compatibility group letter. For dangerous substances or articles of Class 2 hazard code consists of numbers and letters (letters) is (their) group of hazardous properties. Dangerous substances or articles of Class 7, the danger does not have a classification code.
Meanings of the letters that are used in the classification of dangerous goods codes:
Examples of classification codes of dangerous goods of different classes:
Classification code of dangerous goods specified in column 3b of table A of Chapter 3.2 of ADR (dangerous goods list in alphabetical order). The values of the classification code of dangerous goods are given in Chapter 2.2 of ADR.