Tungsten Blue Oxide (W20O58) from Japan
Tungsten blue oxide (W20O58) is a mixed-valence tungsten oxide used as an intermediate in the production of ammonium paratungstate (APT) and tungsten carbide. It is a chemically defined inorganic oxide of tungsten, falling under tariff item 2825.90.00 as 'Other' metal oxides. The product is not excluded by Chapter 28 notes, as it is a separate chemically defined compound of an inorganic base.
Duty Rate — Japan → Canada
PGA flags (2)Show detailsHide detailsCFIAAll ProgramsRequiredHCActive Pharmaceutical IngredientsMay be required
- CFIA
All Programs · Required
CANADIAN FOOD INSPECTION AGENCY: CFIA All Programs requires review / declaration data. CBSA's Single Window matching criteria match this classification number (Equal To 2825900000).
- HC
Active Pharmaceutical Ingredients · May be required
May require HC Active Pharmaceutical Ingredients depending on intended use (HC13) and Canadian product category (HC01). Matching criteria: Starts With 2825. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
Import Tips
• Ensure the product is clearly labelled as tungsten blue oxide (W20O58) with a certificate of analysis confirming its chemical composition
• Verify the applicable duty rate for tariff item 2825.90.00 with the CBSA, as rates may vary based on origin (e.g
• Most-Favoured-Nation or free trade agreements)
• Keep records of the import transaction for at least six years for CBSA audit purposes