Desugared Calcium Lignosulfonate Flakes from Mexico
Flaked calcium lignosulfonate with reduced sugar content from softwood sulfite process, used in ceramics as binder and in water treatment as flocculant. HTS 3804.00.10.00 covers this chemically treated (desugared) lignin sulfonic acid salt.
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
• Submit HPLC analysis showing <2% reducing sugars to qualify as 'desugared' per tariff language
• Certify no tall oil contamination via solvent extraction tests
• Package in moisture-proof bags; humidity absorption can alter physical form and tariff treatment