Sodium Hydrosulfite Powder 85% from China
Technical-grade sodium hydrosulfite at 85% assay, widely imported for pulp bleaching and as a mordant in leather processing. Classified in HTS 2831.10.5000 as other sodium dithionites, per Chapter 28 definitions for chemically pure inorganic sulfur compounds. It is highly reactive and requires inert atmosphere packaging.
Duty Rate — China → United States
40.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Import Tips
• Provide certificate of analysis showing <88% purity to justify 'other' classification vs technical grade
• Comply with DOT hazardous material regulations (Class 8 Corrosive) for ground transport post-import
• Watch for auto-ignition risks; import in nitrogen-flushed containers to prevent decomposition