Tungsten Magnéli Phase Oxide (W18O49) from Canada
W18O49, a Magnéli phase suboxide used in electrochromic windows and field emission displays. Classified HTS 2825.90.30.00 as specific tungsten oxide composition. Non-stoichiometric but chemically defined per Chapter 28.
Duty Rate — Canada → United States
5.5%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Rietveld refinement data confirms phase identity for customs chemical experts
• Research quantities may use HTS 9810.00.7500 for duty-free scientific import
• Handle as conductive material; avoid static discharge during transport