– Dangerous goods are substances which because of their characteristics and composition may endanger the health and safety of persons and the environment. Compliance with a series of strict requirements for their storage, handling and transport is compulsory.

– Dangerous goods labels must be used in transport to identify the risks of the products being transported. Goods are classified according to the international regulation ADR 2019 (European Agreement on the Transport of Dangerous Goods by Road)based on their composition and degree of danger.

• Class 1: Explosive substances and articles. All goods with a risk of causing an explosion, whether it is a mass explosion, a light fire, a blast wave, etc. Identified by a black icon or number on an orange background.
• Class 2: Gases. Classified into three subdivisions according to whether they are flammable (flame icon on a red background), non-flammable non-toxic (cylinder icon on a green background) or toxic (skull icon on a white background).
• Class 3: Flammable liquids. Materials with a maximum flash point of 60º C.
• Class 4: Flammable solids and other solid explosive substances. Subdivided into solid flammable goods (4.1 white and red striped background), self-reactive substance (4.2 white/red background) and substances that release flammable gases in contact with water (4.3 blue background).
• Class 5: Oxidising substances and organic peroxides. Identified by the yellow background.
• Class 6: Toxic substances (which can be harmful to health and even fatal) or infectious substances (which contain micro-organisms such as bacteria or viruses). The label has a white background.
• Class 7: Radioactive substances. The label has a white or yellow/white background depending on the level of radioactivity of the goods.
• Class 8: Corrosive substances. Icon with two pipettes on a black and white background with the word “Corrosive”.
• Class 9: Miscellaneous dangerous substances. The label has black and white stripes at the top, with a white background on the bottom.