Diphenylphosphinous Chloride from China
A phosphorus halide with two phenyl groups, used as a synthetic intermediate for phosphine ligands. This aromatic organo-inorganic compound is covered by HTS 2931.90.30.00 per additional U.S. note 3. The P-C aromatic bonds and phosphorus halide functionality define its classification.
Duty Rate — China → United States
44%
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
• Furnish 31P NMR spectra confirming aromatic phosphine structure
• Handle as corrosive/hydrolytic material; provide proper UN shipping documentation
• Differentiate from Chapter 28 phosphorus compounds by organic substituent dominance