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Colorful chemical drums on pallets with diamond hazard labels, illustrating the ADR dangerous goods classes
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Transport legislation

ADR dangerous goods classes: the 9 classes, labeling and mandatory equipment

Dangerous goods are divided into 9 ADR classes, some of which have divisions: class 1 explosives (1.1–1.6), class 2 gases (2.1–2.3), class 3 flammable liquids, class 4 flammable solids (4.1–4.3), class 5 oxidizing substances and peroxides (5.1–5.2), class 6 toxic and infectious substances (6.1–6.2), class 7 radioactive material, class 8 corrosive substances and class […]

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