Strontium Carbonate Powder (99% Purity) from Mexico
High-purity strontium carbonate (SrCO3) powder used primarily in the production of strontium chemicals and as a flux in ceramics. It falls under HTS 2836.92.00.00 as a chemically defined carbonate of strontium, explicitly listed in the 'Other' category of carbonates per Chapter 28 notes. This inorganic compound meets the criteria for classification in this heading, excluding organo-inorganic compounds.
Duty Rate — Mexico → United States
4.2%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Verify purity and chemical composition via lab analysis to confirm 'chemically defined' status per Chapter 28 Note 1; ensure SDS and COA documentation for customs clearance
• Avoid misclassification as organo-inorganic compounds (Chapter 29)
• Watch for strontium content thresholds to prevent reclassification under rare earths