For hazard class 2.2 refrigerants, which shipping paper item should be included?

• A. Number of cylinders of each gas
• B. Total weight
• C. Hazard class designation
• D. Un number

Answer: (A)

For compressed gas shipments like refrigerants, the most important quantity to communicate on the shipping paper is how many cylinders of each gas you’re carrying. Listing the number of cylinders per gas gives an exact count of the total containers, which directly indicates the scale of any potential release and helps responders plan and coordinate a response. This per-gas cylinder count is more tangible for hazmat handling than weight alone, since cylinders are the physical units of the shipment and can be moved, stored, and mitigated cylinder by cylinder.

Other pieces, such as the hazard class designation or the UN number, are also part of shipping papers and are essential for classification and identification, but they don’t convey the actual quantity in the same actionable way as the number of cylinders.