Sodium Tungsten Borohydride from China
Sodium tungsten borohydride serves as a reducing agent in organic synthesis and fuel cell research. As a chemically defined boride complex of tungsten, it falls under HTS 2850.00.10.00, distinguished from simple salts by chapter note 6 on complex compounds. Typically white crystalline powder soluble in polar solvents.
Duty Rate — China → United States
43%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Classify based on tungsten borohydride core structure, not sodium counterion per complex salt rules
• Corrosive solid label required (UN3260); test pH of aqueous solutions
• Avoid classification disputes by providing molecular formula confirmation