1,1,1-Trichloro-2,2,2-trifluoroethane (CFC-113a) from Mexico
CFC-113a is the isomer of CFC-113, featuring three Cl on carbon 1 and three F on carbon 2, fully perhalogenated per HTS 2903.77.00. This acyclic ethane derivative with exclusively F and Cl atoms was used in solvent applications. Chapter notes confirm classification of isomer mixtures under the same heading.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Validate isomer purity through GC-MS analysis certificates
• Comply with REACH if transshipping through EU
• Use stainless steel cylinders to prevent corrosion