Hydrated Zirconium Carbonate from China
Hydrated zirconium carbonate (ZrCO3·xH2O), supplied as a slurry or powder for water treatment and flame retardants. Falls under HTS 2836.99.50.10 as other zirconium carbonates, chemically defined inorganic salt. It decomposes to zirconia upon heating for refractory applications.
Duty Rate — China → United States
28.7%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Specify hydration level in documentation to distinguish from anhydrous forms; ensure DOT compliance for corrosive properties
• Pitfall: classifying as 'zirconia hydrate' under 2825, which is oxides