BPh4Na Ion Pairing Reagent from Mexico
BPh4Na (sodium tetraphenylborate) acts as an ion-pairing reagent in ion chromatography and HPLC methods for cation separation, classified under HTS 2931.90.15.00 for its aromatic organo-inorganic structure. It qualifies under Chapter 29 note (a) as a pure compound with impurities not affecting classification.
Duty Rate — Mexico → United States
15.8%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Declare intended use as analytical reagent to support classification; provide stability data for transport conditions; avoid mixing with solvents that could trigger solution provisions in Chapter notes