Cobalt(II) Oxide (CoO) from United States
Cobalt(II) oxide (CoO) is a chemically defined inorganic compound of cobalt used as a precursor in ceramics and glass coloring. It falls under the tariff item as a pure cobalt oxide, distinct from commercial grades with impurities. Chapter 28's notes allow separate chemically defined compounds, and CoO is not excluded.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the product is pure CoO with a certificate of analysis to avoid reclassification as a commercial grade or mixture
• If the oxide is used in glass or ceramics, declare the end use
• Keep the invoice and packing list consistent with the chemical description