Names for dangerous goods

Here are the most common expressions that are used in connection with transportation of dangerous goods

Proper Shipping Name - PSN
Proper Shipping Name is the correct shipping name that must always be used for international shipments of dangerous goods. Use, for example, the Proper Shipping Name 'Hydrochloric Acid' (UN1789).

UN number
The UN number is a four-digit number which has been assigned by UN’s expert committee: 'United Nations Subcommittee of Experts', which classifies all dangerous goods. The UN number begins with the letters ”UN” in front of a four-digit number - for example UN1789 (Hydrochloric Acid).

Packing Group - PG
The packing group (Flash Point) denotes the degree of danger for each UN number. There are three different danger classifications:

PG I: High danger

PG II: Medium danger

PG III: Low danger

Flash Point
The Flash Point denotes the lowest temperature at which the substance can be ignited when it comes into contact with oxygen.

Limited Quantity - LQ
Certain types of dangerous goods may be shipped as ordinary goods, if the quantity (Limited Quantity) is less than specified in the IMDG Code. Packing must be specifically approved for transport of limited quantities.

EmS code
The EmS code refers to prevention and emergency procedures (Emergency Schedules), which ships carrying dangerous goods must live up to. The codes are divided into F codes for fire and S codes for spillage. An Ems code could, for example, be F-A (general fire schedule) or S-B (corrosive substances).

Subsidiary risk
Some classes have both a primary and a subsidiary class - for example UN1992 'Flammable Liquid, Toxic N.O.S.', which has primary class 3 (flammable), subsidiary class 6.1(toxic) and 'Marine Pollutant'.

If you have questions about transport of dangerous goods you are welcome to contact the operations department, telephone +299 34 91 17 or


Dangerous goods declarations

Pdflogo Pdflogo Pdflogo