Zinc Formaldehyde Sulfoxylate from China
A sulfoxylate derivative of sodium used as a reducing agent in printing and dyeing industries, classified under HTS 2831.10.5000 as 'other' sulfoxylates of sodium. Despite the zinc component, it meets chemically defined criteria per Chapter 28/29 notes when primarily sodium-based. It functions similarly to sodium dithionite in textile processing.
Duty Rate — China → United States
43%
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
• Confirm sodium base composition through assay reports to distinguish from pure zinc sulfoxylates under different headings
• Declare as hazardous (UN 3077) with proper IMDG/IMDG shipping papers for ocean freight
• Avoid bulk unpackaged imports; use sealed drums to meet stability requirements during transit