Haz mats use of guides

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Across
  1. 3. What kind of dross is in UN number 1435
  2. 5. What kind of kit is in UN number 3316
  3. 6. If you know the name of the substance, which coloured guide do you go to
  4. 7. If you know the UN number, which coloured guide do you go to
Down
  1. 1. UN number 1144
  2. 2. What kind of mixture is in UN number 2602
  3. 4. UN number 1001