Cobalt Ammonium Sulfate from China
Double salt of cobalt and ammonium sulfate (CoSO4·(NH4)2SO4·6H2O) used in analytical labs and plating. Falls under HTS 2833.29.10.00 as a sulfate of cobalt, with complex salts directed by Chapter notes.
Duty Rate — China → United States
26.4%
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Confirm if simple mixture or true double salt via X-ray diffraction for accurate heading 2833 classification
• Include molecular formula on commercial invoice to avoid disputes over complex salt status
• Segregate from organic-stabilized versions that may fall under excluded preparations