UN
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List of UN Numbers
UN Number
Proper Shipping Name/Description
Details
3337
REFRIGERANT GAS R404A (pentafluoroethane, 1,1,1-trifluoroethane, and 1,1,1,2-tetrafluoroethane zeotropic mixture with approximately 44 % pentafluoroe thane and 52 % 1,1,1-trifluoroethane)
3338
REFRIGERANT GAS R407A (Difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane zeotropic mixture with approximately 20% difluoromethane and 40% pentafluoroethane)
3339
REFRIGERANT GAS R407B (Difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane zeotropic mixture with approximately 10% difluoromethane and 70% pentafluoroethane)

