Refined Borax Pentahydrate from China
Borax pentahydrate (Na2B4O7·5H2O) is a refined crystalline form of disodium tetraborate used in detergents and herbicides. Classified under HTS 2840.19.00.00 as 'other' refined borax beyond the standard decahydrate. It qualifies as a chemically defined borate per Chapter 28 notes.
Duty Rate — China → United States
37.6%
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
• Provide crystal water content analysis to distinguish from decahydrate; check for peroxoborate contamination
• Pitfall: Incorrect hydration state leads to reclassification
• Use proper UN 2491 shipping for hazard class