In the DOT ERG, which color section would you use to locate a chemical name if you know the UN ID number?

In the DOT ERG, which color section would you use to locate a chemical name if you know the UN ID number?

• A. Blue
• B. Orange
• C. Green
• D. Yellow

Answer: (D)

The UN/ID number is used as the key to the Yellow section. That part of the DOT ERG is indexed by UN numbers and shows the chemical names associated with each UN ID, along with the guide number you’ll need next. Once you’ve found the chemical name in the Yellow section, you use that guide number to jump to the Orange section for the specific response instructions, hazards, and recommended actions. The Blue and Green sections cover other emergency information (like isolation distances and general safety guidance), but they aren’t the place to locate a chemical name by UN ID.

The UN/ID number is used as the key to the Yellow section. That part of the DOT ERG is indexed by UN numbers and shows the chemical names associated with each UN ID, along with the guide number you’ll need next. Once you’ve found the chemical name in the Yellow section, you use that guide number to jump to the Orange section for the specific response instructions, hazards, and recommended actions. The Blue and Green sections cover other emergency information (like isolation distances and general safety guidance), but they aren’t the place to locate a chemical name by UN ID.