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3913.90.50.00/Chitosan Flakes/Japan

Chitosan Flakes from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Certify deacetylation degree (typically >60%) for polymer status; shellfish origin requires allergen labeling if food contact; test for heavy metals