</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
2825.90.90.00/Tungsten Trioxide Powder/Canada

Tungsten Trioxide Powder from Canada

Tungsten trioxide (WO3) is a yellow-green powder used in gas sensors, smart windows, and catalysts. Classified in HTS 2825.90.90.00 as an other metal oxide of tungsten. It qualifies as a chemically defined inorganic compound per Chapter 28 Note 1.

Duty Rate — Canada → United States

3.7%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
Calculate with your customs valueVerify classification with AI

Import Tips

• Provide certificates of analysis confirming WO3 content >99% to avoid reclassification as alloy or waste

• Comply with TSCA regulations; include end-use declaration to prevent diversion to defense applications

Tungsten Trioxide Powder from Canada — Import Duty Rate | HTS 2825.90.90.00