Chrome Tanning Agent Lignin Derivative from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• TSCA inventory listing confirmed for lignin sulfonates
• Chrome content analysis prevents hazmat classification
• Leather chemical specialists handle niche documentation