Sodium Alginate Powder from Mexico
Sodium alginate is the sodium salt of alginic acid, a natural polysaccharide extracted from brown seaweed, appearing as a white to yellowish powder in primary form. It falls under HTS 3913.10.00.00 as a salt of alginic acid not elsewhere specified. Primarily used in food, pharmaceutical, and textile industries for its gelling and thickening properties.
Duty Rate — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify purity and seaweed source documentation to confirm natural origin; ensure COA shows sodium alginate content >95% for proper classification
• Common pitfall: mislabeling as synthetic polymer leading to wrong chapter