If a chemical name is not highlighted in the ERG, the next step is to proceed to which section?

If a chemical name is not highlighted in the ERG, the next step is to proceed to which section?

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

Answer: (B)

The ERG is designed for two quick lookup paths: by chemical name or by UN/ID number. If the chemical name isn’t highlighted, you can’t pull up the specific guide page for that name, so you switch to the UN/ID number route. The orange section is the part that handles that lookup—it contains the UN/ID number index and the corresponding guide numbers. Once you find the right guide number in the orange pages, you turn to that guide page to get the recommended actions, including initial isolation and protective action steps. After identifying the material this way, you’d use the green section for actual isolation distances and other hazard controls.

The ERG is designed for two quick lookup paths: by chemical name or by UN/ID number. If the chemical name isn’t highlighted, you can’t pull up the specific guide page for that name, so you switch to the UN/ID number route. The orange section is the part that handles that lookup—it contains the UN/ID number index and the corresponding guide numbers. Once you find the right guide number in the orange pages, you turn to that guide page to get the recommended actions, including initial isolation and protective action steps. After identifying the material this way, you’d use the green section for actual isolation distances and other hazard controls.