In the Emergency Response Guidebook, which pages list dangerous goods by UN numbers?

In the Emergency Response Guidebook, which pages list dangerous goods by UN numbers?

• A. Orange pages
• B. Red pages
• C. Yellow pages
• D. Blue pages

Answer: (C)

The key is how the ERG is organized for quick on-scene lookups. The yellow pages are arranged by UN number, the standardized identifier that appears on shipping papers and labels. When responders know the UN number, they flip to the yellow pages to find that exact entry, which points them to the appropriate emergency response guidance for that material. This makes the yellow pages the go-to section for looking up dangerous goods by UN numbers. Other color sections organize information differently—by guide number or by material name—so they aren’t used for UN-number lookups.