Methyl Chloride Refrigerant Grade R-40 from Mexico
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 — Mexico → United States
15.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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