Sodium Hydrosulfite Powder 85% from Mexico
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 — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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