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A chemical hazard symbol is a pictogram applied to containers and storage areas of dangerous chemical compounds to indicate the specific hazard, and thus the required precautions. There are several systems of labels, depending on the purpose, such as on the container for transportation, containers for end-use, or on a vehicle during transportation.
Hazard pictograms form part of the international Globally Harmonized System of Classification and Labelling of Chemicals (GHS). Two sets of pictograms are included within the GHS: one for the labelling of containers and for workplace hazard warnings, and a second for use during the transport of dangerous goods.
Pictograms will have a black symbol on a white background with a red diamond frame. For transport, pictograms will have the background, symbol and colors currently used in the UN Recommendations on the Transport of Dangerous Goods. Where a transport pictogram appears, the GHS pictogram for the same hazard should not appear.
The symbols were replaced from 1 December 2010 to 1 June 2017, via a gradual phaseout. [1] After 1 June 2017, Directive 67/548/EEC symbols were no longer allowed to be used. [1] From 1967 to 2017, these symbols were used for labeling containers and piping systems containing dangerous substances/mixtures.
Pressurized container: may burst if heated H230: May react explosively even in the absence of air H231: May react explosively even in the absence of air at elevated pressure and/or temperature H232 May ignite spontaneously if exposed to air H240: Heating may cause an explosion H241: Heating may cause a fire or explosion H242: Heating may cause ...
The white "special notice" area can contain several symbols. The following symbols are defined by the NFPA 704 standard. OX: Oxidizer, allows chemicals to burn without an air supply (e.g., potassium perchlorate, ammonium nitrate, hydrogen peroxide). W: Reacts with water in an unusual or dangerous manner (e.g., caesium, sodium, diborane ...
Inspections of ocean shipping containers conducted by the U.S.-based National Cargo Bureau discovered a shocking number of containers with misdeclared and improperly packaged cargo. CINS describes ...
Dangerous goods are often indicated by diamond-shaped signage on the item (see NFPA 704), its container, or the building where it is stored. The color of each diamond indicates its hazard, e.g., flammable is indicated with red, because fire and heat are generally of red color, and explosive is indicated with orange, because mixing red ...