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2825.90.30.00/Tungsten Magnéli Phase Oxide (W18O49)/Mexico

Tungsten Magnéli Phase Oxide (W18O49) from Mexico

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 — Mexico → United States

5.5%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
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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

Tungsten Magnéli Phase Oxide (W18O49) from Mexico — Import Duty Rate | HTS 2825.90.30.00