Practice question

Under GB 6944-2012 and JT/T 617.2, liquid substances transported or offered for transport at temperatures at or above 100°C (such as liquid asphalt / molten bitumen) are classified under which Class 9 UN Number?

  1. UN 3257 (Elevated temperature liquid, n.o.s.)
  2. UN 3077 (Environmentally hazardous substance, solid, n.o.s.)
  3. UN 1999 (Tars, liquid)
  4. UN 3258 (Elevated temperature solid, n.o.s.)

Answer: A — UN 3257 (Elevated temperature liquid, n.o.s.)

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