Sodium Tetraphenylborate Analytical Grade from Japan
High-purity sodium tetraphenylborate (NaBPh4) in analytical grade, a white crystalline powder used for gravimetric determination of potassium in lab settings, falls under HTS 2931.90.15.00 due to its aromatic organo-inorganic nature with direct boron-carbon bonds. It meets Chapter 29 note (a) as a separate chemically defined compound.
Duty Rate — Japan → United States
15.8%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include SDS (Safety Data Sheets) and lot-specific purity certificates; declare exact CAS number 143-66-8 for customs verification; avoid bulk packaging over transport limits to prevent hazmat surcharges