Concentrated Sulfite Pulp Lignin Solution from Canada
A 50% solids solution of lignin sulfonates from magnesium-based sulfite pulping, used in dye dispersants and leather tanning. HTS 3804.00.5000 applies to such concentrated residual lyes from wood pulp production.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify pulping base (sodium/calcium/magnesium) in entry docs
• Viscosity and solids % critical for liquid vs powder declaration
• Biodegradability claims need substantiation for green certifications