Transport of Dangerous Goods by Sea (IMDG-Code Amdt. 41-22)


2. Classification (7/9)

UN Number and Proper Shipping Name

  1. Each entry in the Dangerous Goods List uniquely identified by two pieces of information:
    • The four-digit UN Number
    • The corresponding Proper Shipping Name (PSN)
  2. It defines a substance/article
    • either directly (e.g. UN 1090 Acetone)
    • or via a collective entry, grouped according to:
      • chemical substance or
      • use
      • hazards and condition

  3. Every UN Number has one or more hazards assigned to it (e.g. UN 2438: toxic, flammable liquid, corrosive). These hazards correspond to the respective Dangerous Goods classes.
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