1,1-Dichloro-1-fluoroethane (R-141b) from Japan
R-141b is the refrigerant designation for this dichlorofluoroethane compound, used in precision cleaning of metal parts and as a foam expansion agent. Its classification under HTS 2903.73.01.00 reflects its status as a separate chemically defined organic compound with two different halogens on an acyclic hydrocarbon chain.
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
• Label containers with both chemical name and R-141b designation to facilitate customs verification
• Include Montreal Protocol compliance documentation proving legal production under quota allocations
• Avoid common pitfall of declaring as 'refrigerant' which could trigger incorrect Chapter 28 classification