Chrome Tanning Agent Lignin Derivative from Canada
Specially precipitated calcium lignosulfonate from pulp mill recovery used to complex chrome salts in leather tanning. Remains under HTS 3804.00.5000 as chemically treated but origin-specific wood pulp residual lye.
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
• TSCA inventory listing confirmed for lignin sulfonates
• Chrome content analysis prevents hazmat classification
• Leather chemical specialists handle niche documentation