Chitosan Flakes from Mexico
Chitosan, deacetylated chitin from crustacean shells, is a natural polymer in primary flake form for water treatment and biomedical uses. HTS 3913.90.5000 for other natural polymers.
Duty Rate — Mexico → United States
16.5%
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
• Certify deacetylation degree (typically >60%) for polymer status; shellfish origin requires allergen labeling if food contact; test for heavy metals