Methyl Chloride Refrigerant Grade R-40
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chloroethane (ethyl chloride) instead
Same subheading but statistical suffix distinguishes ethyl chloride.
If for other chlorinated methanes like dichloromethane
Different carbon chain length or substitution pattern changes classification.
If refrigerant blend with additives
Mixtures of fluorinated/non-fluorinated gases for refrigeration classify in 3824.
Not sure which classification is right?
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Import Tips & Compliance
• 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
Related Products under HTS 2903.11.00.10
Chloromethane (Methyl Chloride) 99% Purity
Chloromethane, also known as methyl chloride, is a colorless, flammable gas used primarily as a chemical intermediate in the production of silicone polymers and agricultural chemicals. This 99% purity grade falls under HTS 2903.11.0010 as a saturated chlorinated derivative of acyclic hydrocarbons, specifically chloromethane. It is supplied in pressurized cylinders for industrial use.
Chloromethane Anhydrous Industrial Grade
Anhydrous chloromethane is used in the production of methyl cellulose, quaternary ammonium compounds, and as a solvent in organic synthesis. This industrial grade meets HTS 2903.11.0010 specifications as chemically defined chloromethane without water impurities. Typically shipped in ton cylinders.
Methyl Chloride Pharmaceutical Grade USP
USP-grade methyl chloride meets pharmaceutical standards for use in sterile alkylation reactions and as a propellant in metered-dose inhalers. Falls under HTS 2903.11.0010 as chemically pure chloromethane. Supplied in small medical gas cylinders.
Chloromethane Silicone Monomer Precursor
High-purity chloromethane serves as the methylating agent in the direct process for producing dimethyldichlorosilane, the primary silicone monomer. Classified under HTS 2903.11.0010 as it is chemically defined chloromethane used in organosilicon synthesis. Ultra-high purity minimizes side reactions.
Methyl Chloride Agrochemical Intermediate
Chloromethane is reacted with alcohols to produce methyl esters used in herbicide and insecticide synthesis. This agrochem grade meets HTS 2903.11.0010 as pure chloromethane, the saturated chlorinated acyclic hydrocarbon. Supplied in ISO tank containers.
Electronic Grade Chloromethane 99.999%
Ultra-high purity (6N) chloromethane used in vapor phase epitaxial growth of compound semiconductors and as a dopant source. Meets stringent HTS 2903.11.0010 classification as chemically defined chloromethane for electronics manufacturing. Lecker-free cylinders.