HFC-143 Industrial Chiller Refrigerant from Mexico
High-purity 1,1,2-trifluoroethane (HFC-143) specifically for large-scale industrial chillers and air conditioning systems. This saturated fluorinated acyclic hydrocarbon is explicitly named in HTS 2903.44.10.30. Non-flammable and zero ozone depletion potential makes it suitable for replacement of R-502 blends.
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
• Include certificate of analysis showing HFC-143 purity and absence of HFC-143a isomers to prevent misclassification
• Comply with Kigali Amendment phase-down; track import allocations via EPA's HFC allocation system
• Use only UN-approved 49 CFR cylinders; avoid common pitfall of improper valve specifications leading to customs holds