Chitosan Flakes
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If lower deacetylation, as crude protein
Less processed chitin derivatives stay in Chapter 35 as gelatinous substances.
If specifically chitosan subheading applies
Higher specificity might exist, but 'other' covers general forms.
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Import Tips & Compliance
• Certify deacetylation degree (typically >60%) for polymer status; shellfish origin requires allergen labeling if food contact; test for heavy metals
Related Products under HTS 3913.90.50.00
Sodium Carboxymethyl Cellulose Powder
Sodium carboxymethyl cellulose (CMC) is a chemically modified derivative of cellulose, a natural polymer, supplied in primary powder form for use in food, pharmaceuticals, and industrial applications as a thickener and stabilizer. It falls under HTS 3913.90.5000 as a modified natural polymer not elsewhere specified in primary forms.
Hydroxypropyl Methylcellulose Granules
Hydroxypropyl methylcellulose (HPMC) is a semi-synthetic derivative of cellulose used in primary granule form for coatings, capsules, and construction mortars. Classified under HTS 3913.90.5000 as a modified natural polymer in primary form, not covered elsewhere.
Alginic Acid Powder
Alginic acid, extracted from brown seaweed, is a natural polymer in primary powder form used in food gelling and pharmaceutical encapsulation. It is classified in HTS 3913.90.5000 as a natural polymer not elsewhere specified.
Sodium Alginate Flakes
Sodium alginate, a salt derivative of alginic acid, is provided in primary flake form for textile printing and food thickening applications. Falls under HTS 3913.90.5000 as a modified natural polymer.
Casein Modified Powder
Chemically hardened casein protein, derived from milk, in primary powder form for industrial coatings and adhesives. Classified under HTS 3913.90.5000 as hardened proteins, a modified natural polymer.
Methylcellulose Pharmaceutical Grade
Pharmaceutical-grade methylcellulose, a cellulose ether derivative, supplied in primary form for tablet coatings and viscosifiers. HTS 3913.90.5000 covers this modified natural polymer.