Cobalt(II) Sulfate Heptahydrate from China
Cobalt(II) sulfate heptahydrate (CoSO4·7H2O) is a pink crystalline salt used in electroplating baths and as a cobalt source in fertilizers. It falls under HTS 2833.29.10.00 as a sulfate of cobalt, classified among other sulfates of metals per Chapter 28 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)
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Verify purity and hydrate form via Certificate of Analysis (CoA) to confirm HTS 2833.29.10.00 classification as cobalt sulfate
• Include Safety Data Sheet (SDS) and ensure EPA/TSCA registration for chemical import compliance
• Avoid misclassification as fertilizer blends (Chapter 31); ship as pure chemical to prevent reclassification