Liquid Fluorine in Cryogenic Dewar from Mexico
Cryogenically cooled dewar flask containing liquefied fluorine (boiling point -188°C), supplied to research labs for rocket propulsion and plasma etching. Classified under HTS 2801.30.10.00 as pure fluorine in liquid state, meeting Chapter 28 definitions for elemental halogens.
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
• Comply with IATA/49 CFR packing instructions for Division 2.3 poison gases; include cryogenic handling certifications
• Declare exact purity (>99%) to avoid reclassification; pitfall is failing to specify physical state on commercial invoice
• Insure against spontaneous combustion risks; use facilities with fluorine-compatible piping