Diphenylphosphinous Chloride from Canada
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 — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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