Which column letter corresponds to the UN or ID Number in the DGR Table?

• A. Column B
• B. Column C
• C. Column D
• D. Column A

Answer: (D)

The UN/ID Number is the primary reference used to identify dangerous goods, so in the DGR Table it sits in the first column on the left. This leftmost position makes it the key lookup entry: you locate the four-digit UN number, then read across the row to see the corresponding proper shipping name, hazard class, packing group, and any subsidiary risks. The other columns provide those details for that specific UN number, not the main identifier itself.