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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If esterified with propylene glycol
Propylene glycol alginates are specifically named in subheading 3913.10, taking precedence over 'other'.
If imported as crude seaweed extract
Unmodified algal extracts remain in Chapter 13 as vegetable saps, not primary polymers.
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Import Tips & Compliance
• Include extraction certificates proving natural origin from algae; ensure no propylene glycol modification to avoid 3913.10; comply with US food contact regulations via prior notice filing
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.
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
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Methylcellulose Pharmaceutical Grade
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Guar Gum Derivative Powder
Hydroxypropyl guar, a modified form of guar gum natural polymer, in primary powder for fracturing fluids in oilfield applications. Classified as other modified natural polymers under HTS 3913.90.5000.