High-Purity Anhydrous Sodium Tetraborate from China
High-purity anhydrous Na2B4O7 for laboratory reagents and pharmaceutical intermediates. It is classified in HTS 2840.11.00.00 as refined anhydrous disodium tetraborate, a chemically defined borate per Chapter 28 notes. Devoid of crystal water, distinguishing it from pentahydrate forms.
Duty Rate — China → United States
37.8%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Obtain Certificate of Analysis (CoA) specifying anhydrous purity >99% for customs validation
• Comply with REACH-like regulations if transshipping through EU; provide toxicity data
• Use proper NA/UN numbers for shipping as it may be regulated as an irritant