Calcium Lignosulfonate Powder from Mexico
Calcium lignosulfonate is a water-soluble anionic polyelectrolyte derived from the sulfite pulping process of wood, consisting of lignin sulfonic acid neutralized with calcium. It falls under HTS 3804.00.10.00 as a salt of lignin sulfonic acid, typically used as a dispersant in concrete admixtures and as a binder in animal feed pellets.
Duty Rate — Mexico → United States
10%
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
• Verify chemical composition via lab analysis to confirm lignin sulfonic acid salt content meets HTS criteria; impurities may trigger reclassification
• Provide manufacturer's specification sheets and COA documenting production from wood pulp sulfite process
• Ensure proper SDS and hazardous material declarations if shipped in bulk powder form to avoid delays