Refined Anhydrous Borax (Na2B4O7) from China
Refined anhydrous borax, also known as anhydrous sodium tetraborate, is a white, odorless powder used in glass manufacturing and as a cleaning agent. It falls under HTS 2840.19.00.00 as 'other' disodium tetraborate (refined borax) that is not the decahydrate form. This chemically defined inorganic compound meets Chapter 28 criteria for borates.
Duty Rate — China → United States
35.1%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify purity and refinement level via lab analysis certificates to confirm refined borax status; ensure SDS includes CAS 1330-43-4
• Common pitfall: confusing with unrefined borates from Chapter 25
• Label as hazardous if hydrated forms present