Octenyl Succinic Anhydride (OSA) Modified Starch
OSA-modified starch is esterified with octenyl succinic anhydride to provide emulsifying properties in beverages and dressings. This surface-modified starch is classified under tariff item 3505.10.19 as an esterified starch, specifically 'other' than those listed elsewhere.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 8% | — | 8% |
| 🇲🇽Mexico | 8% | — | 8% |
| 🇺🇸United States | 8% | — | 8% |
| 🇩🇪Germany | 8% | — | 8% |
| 🇯🇵Japan | 8% | — | 8% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the esterification is not the sole modification
Other modified starches not elsewhere specified.
If the starch is unmodified maize starch
Native starches are classified in Chapter 11.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Keep documentation showing the esterification with OSA and the degree of substitution
• Verify the starch is not pregelatinized, which would fall under 3505.10.20
• Check if the product is used in food preparations that might affect classification
Related Products under Tariff item 3505.10.19
Corn Starch Acetate
Corn starch acetate is an esterified modified starch produced by reacting corn starch with acetic anhydride or vinyl acetate. It is used in biodegradable plastics, coatings, and adhesives, where it provides film-forming properties and improved hydrophobicity. This product is classified under tariff item 3505.10.19 as an esterified starch other than those specifically named.
Crosslinked Potato Starch
Crosslinked potato starch is a modified starch where chemical bridges are introduced to improve heat and shear resistance, making it ideal for gravies and other processed foods. The chemical modification places it under tariff item 3505.10.19 as an 'other' esterified or etherified starch, distinct from pregelatinized or soluble starches.
Cross-Linked Potato Starch for Drilling Fluids
Cross-linked potato starch is a chemically modified starch where the granules are treated with cross-linking agents to improve stability in high-temperature, high-shear environments. It is used primarily as a viscosifier in oilfield drilling fluids, where it helps control fluid loss and maintain rheological properties. This product falls under tariff item 3505.10.19 as an etherified or esterified starch other than cationic potato starch for papermaking.
Esterified Potato Starch for Textile Sizing
Esterified potato starch is chemically modified through esterification to size yarns in textile weaving, providing abrasion resistance. This modification places it under tariff item 3505.10.19 as an 'other' esterified starch, distinct from native or pregelatinized starches.
Esterified Wheat Starch
Esterified wheat starch is chemically modified through esterification to improve stability and texture in processed foods like sauces. This modification qualifies it under tariff item 3505.10.19 as an 'other' esterified starch, distinct from native starches or pregelatinized forms.
Hydroxypropylated Potato Starch for Cleaners
Hydroxypropylated potato starch is an etherified starch used in powdered laundry detergents as a soil suspender. As an etherified modified starch, it falls under tariff item 3505.10.19 as 'other', and is not excluded as an enzymatic washing preparation of Chapter 34.