USP Grade Disodium Carbonate Anhydrous
USP grade disodium carbonate anhydrous is a pure form of Na2CO3 meeting pharmaceutical standards for use in buffering solutions and as an excipient. It is a chemically defined compound under Chapter 28 Note 1(a), and the USP grade designation does not change its classification.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is sodium hydrogencarbonate
Bicarbonate is classified separately from carbonate.
If the product is formulated with excipients or binders
Formulated products may fall under pharmaceutical headings or other carbonate items.
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
• Maintain USP certification documents to demonstrate purity, though this does not affect tariff classification
• Ensure the product is not put up in measured doses or for retail sale, which could trigger Section VI Note 2
• Confirm the anhydrous form in the product specification
Related Products under Tariff item 2836.20.00
Anhydrous Soda Ash (Disodium Carbonate)
Anhydrous soda ash is a pure, chemically defined form of disodium carbonate (Na2CO3) used primarily as a flux in glass manufacturing to lower melting temperatures. It meets the criteria of Chapter 28 Note 1(a) as a separate chemically defined compound and is not excluded by any chapter note.
Calcined Soda Ash for Glass Production
Calcined soda ash is thermally processed disodium carbonate optimized for glass production, meeting Chapter 28 Note 1(a) as a chemically defined compound. The calcination process does not alter its chemical identity as Na2CO3, so it remains classified under this tariff item.
Dense Soda Ash (Light Soda Ash Alternative)
Dense soda ash is a high-density granular form of disodium carbonate produced via the Solvay process, used in detergents and chemical synthesis. As a chemically defined compound meeting Chapter 28 Note 1(a), it falls under this tariff item regardless of physical form.
Granular Disodium Carbonate 99.5% Purity
Granular disodium carbonate at 99.5% purity is a chemically defined compound used as a cleaning agent in industrial boilers and textile processing. It meets Chapter 28 Note 1(a) as a separate chemically defined compound, and the granular form does not affect classification.
Sodium Carbonate Monohydrate (Crystal Soda)
Sodium carbonate monohydrate (Na2CO3·H2O) is a hydrated crystalline form of disodium carbonate used in water treatment and as a pH buffer. As a chemically defined compound with water of crystallization, it falls under Chapter 28 Note 1(a) and is not excluded by any note.
Technical Grade Soda Ash 99.2%
Technical grade soda ash with 99.2% Na2CO3 purity is a chemically defined compound used in paper manufacturing and effluent treatment. It meets Chapter 28 Note 1(a) as a separate chemically defined compound, and the technical grade designation does not affect classification.