Tungsten Oxychloride WCl4O from Japan
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 — 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
• Confirm molecular formula via analytical certificate; store in inert atmosphere containers; declare as UN 2444 for air transport