Section 06 Products of the chemical or allied 38 Miscellaneous chemical products 38 27 - Other 38 27 51 -- Containing trifluoromethane (HFC-23) 38 27 51 00 -- Containing trifluoromethane (HFC-23) Commodity Code Description 38 27 51 00 000 -- Containing trifluoromethane (HFC-23)