Sodium Lignosulfonate Powder from Mexico
Sodium lignosulfonate is a water-soluble anionic polyelectrolyte derived from the sulfite pulping process of wood pulp production. It falls under HTS 3804.00.5000 as a residual lye from wood pulp manufacture, chemically treated and concentrated for use as a dispersant, binder, and dust suppressant in industrial applications.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify chemical composition via lab analysis to confirm lignin sulfonate content meets residual lye criteria
• Obtain certificates of origin proving derivation from wood pulp sulfite process to avoid misclassification
• Ensure proper SDS and waste byproduct documentation, as it may trigger environmental import restrictions