Zinc Formaldehyde Sulfoxylate from Mexico
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 — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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