Hydrated Zirconium Carbonate from Mexico
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 — Mexico → United States
3.7%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
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