Tungsten Oxychloride WCl4O from Mexico
Tungsten oxychloride (WCl4O) is a volatile compound used in vapor phase deposition of tungsten oxide films for optical coatings. It qualifies as a chloride oxide of tungsten under HTS 2827.39.40.00. The compound features a distinctive yellow color and high reactivity.
Duty Rate — Mexico → United States
15.5%
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
• Confirm molecular formula via analytical certificate; store in inert atmosphere containers; declare as UN 2444 for air transport