HS Code for Alginate
Alginates, including alginic acid and its various salts and esters, are classified under HS code 3913.10. This classification places the product in Chapter 39, which covers plastics and articles thereof. Specifically, heading 3913 is reserved for natural polymers and modified natural polymers that are not specified or included elsewhere, in primary forms. Alginates are polysaccharides derived from the cell walls of brown algae. Through chemical extraction and processing, the raw seaweed is transformed into a polymer (alginic acid) or its salts (such as sodium alginate). Because the resulting product is a chemically defined natural polymer, it is classified in the plastics chapter rather than the vegetable products chapter. The "primary form" designation means the alginate must be in the form of liquids, pastes, powders, granules, or flakes. These substances are essential in various industries, serving as thickeners in food, gelling agents in pharmaceuticals, and sizing agents in textiles.
Products Included
- Sodium alginate
- Potassium alginate
- Calcium alginate
- Alginic acid
- Propylene glycol alginate (PGA)
Common Misclassification
Alginates are often misclassified under HS code 1302.39, which covers "Other mucilages and thickeners derived from vegetable products." While alginates are derived from vegetables (seaweed), the HS Explanatory Notes for Chapter 39 clarify that natural polymers like alginic acid and its derivatives are specifically excluded from Chapter 13 and must be placed in 3913. Another error is 2106.90 for food-grade alginates; however, 3913.10 remains the correct code for the substance itself in primary form.
FAQ
What is the HS code for sodium alginate?
Sodium alginate is classified under HS code 3913.10.00.
Why is alginate in the plastics chapter?
The Harmonized System classifies all natural polymers in primary forms, such as alginic acid and hardened proteins, under Chapter 39 because they share chemical and structural characteristics with synthetic plastics and polymers.
Industry
Frequently Asked Questions
What is the HS code for Alginate?
The HS code for Alginate is 391310 (Polymers, natural; alginic acid, its salts and esters, in primary forms).
How do I classify Alginate for customs?
Alginate is classified under HS code 391310 — Polymers, natural; alginic acid, its salts and esters, in primary forms. This is a 6-digit subheading level code.
Is the HS code for Alginate the same in all countries?
The base HS code 391310 for Alginate is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.