2903.73.00/1,1-Dichloro-1-fluoroethane (R-141b)/Mexico

1,1-Dichloro-1-fluoroethane (R-141b) from Mexico

1,1-Dichloro-1-fluoroethane (R-141b) is a separate chemically defined organic compound with the molecular formula CH3CCl2F. It is a halogenated derivative of acyclic hydrocarbons containing two different halogens (chlorine and fluorine), which places it squarely under tariff item 2903.73.00. The product is used in precision cleaning of metal parts and as a foam expansion agent.

Duty Rate — Mexico → Canada

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Import Tips

• Ensure the product is pure 1,1-dichloro-1-fluoroethane (HCFC-141b) and not a mixture, as mixtures may fall under other headings

• Verify whether an import permit is required under Canada's Ozone-depleting Substances Regulations, as HCFCs are controlled substances

• Declare the correct CAS number (1717-00-6) on customs documentation to avoid delays