Mercuric Sulfate Catalyst from China
HgSO4 preparation employed as a catalyst in acetylene hydration to acetone production. Classified in HTS 3815.90.2000 as a wholly inorganic mercury reaction initiator.
Duty Rate — China → United States
40.3%
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Strict mercury import quotas apply; obtain Commerce Department authorization prior to shipment
• Use secondary containment packaging per UN standards for soluble mercury salts
• Misclassification risk as battery component (8507) if not clearly catalytic