Tungsten Dioxide (WO2) Nanopowder from Canada
WO2 nanoparticles used in infrared shielding coatings and gas sensing elements. Classified under HTS 2825.90.30.00 as tungsten oxides regardless of particle size, per chemical definition. Nanotechnology form doesn't alter inorganic compound classification.
Duty Rate — Canada → United States
5.5%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Include TEM/SEM analysis showing primary particle size <100nm for technical verification
• Comply with emerging nanomaterial reporting requirements in destination country
• Agglomeration state affects handling; declare both primary and bulk density