Methyl Chloride Refrigerant Grade R-40 from Japan
Methyl chloride R-40 is a historical refrigerant gas, still used in specialty low-temperature applications and as a methylating agent. Classified under HTS 2903.11.0010 as pure chloromethane, a halogenated acyclic hydrocarbon derivative. Supplied in 50 lb cylinders with refrigerant-grade purity.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include ASHRAE safety classification documentation; R-40 is highly flammable (A2L class)
• Declare exact composition; blends with other gases may reclassify under 3824.78
• Comply with Montreal Protocol reporting even for non-CFC gases