“When a mixture of dangerous goods or articles containing dangerous goods are described by one of the “N.O.S.” or “generic” entries to which special provision 274 has been allocated in the Dangerous Goods List, not more than the two constituents which most predominantly contribute to the hazard or hazards of the mixture or of the articles need to be shown, excluding controlled substances when their disclosure is prohibited by national law or international convention.”,

IMDG Code 39-18 section 3.1.2.8.1.2

Special Provision 274 assigned to Generic and Not Otherwise Specified (N.O.S.) entries in Model Regulations requires the shipper to supplement the Proper Shipping Name (PSN) with Technical Name on the Packages (marking) and in shipping papers (Dangerous Goods Declaration).

 ‘What’ must supplement the proper shipping name and ‘Why’ this is required.

What

The Generic and N.O.S. entries assigned with SP 274 shall be supplemented with

• Technical or Chemical group names
• Shall be a recognized chemical or other name currently used in scientific and technical handbooks, journals and texts.
• Shall be entered in brackets immediately following the Proper Shipping Name
• Modifier, such as “contains” or “containing” or other qualifying words such as “mixture”, “solution”, etc., and the percentage of the technical constituent may also be used
• Trade names shall not be used for this purpose

For Pesticides below may be used:

• ISO common name(s),
• other name(s) in the WHO Recommended Classification of Pesticides by Hazard and Guidelines to Classification
• the name(s) of the active substance(s)

When not required?

When a national law or international convention prohibits disclosing the name of a controlled substance.

Why Technical name is required?

Below table shows some of the reasons for the requirement of technical names through special provision 274

Dangerous Goods Declaration

IMDG Code require supplementing proper shipping names that are assigned special provision 274 or 318 in column 6 of the Dangerous Goods List shall be supplemented with their technical or chemical group names as described in 3.1.2.8 of the Code.

Example: UN 1993 Flammable liquid, n.o.s. (contains xylene and benzene)

This is not the end of the requirement there is one more special provision which asks for technical name. This is SP 220 assigned to UN 3248 MEDICINE, LIQUID, FLAMMABLE, TOXIC, N.O.S

SP 220 states that the technical name of flammable liquid component shall be shown in brackets immediately following the Proper Shipping Name.

Where to display Technical Name?

To know where to display technical name on package or IBC click on the image below