2931.90.15.00 - Sodium tetraphenylboron

This HTS code, 2931.90.15.00, specifically covers Sodium tetraphenylboron. This compound is an organo-inorganic compound characterized by its structure containing phenyl groups bonded to boron and sodium. Its primary use is as a precipitating agent for potassium and other large cations, making it a valuable reagent in analytical chemistry and various industrial processes.

Within the broader category of "Other organo-inorganic compounds," this subheading differentiates itself from its siblings. For instance, 2931.90.05.00 covers specific organosilicon compounds, while 2931.90.10.00 pertains to a particular organophosphorus ester. Sodium tetraphenylboron, by contrast, is classified here due to its distinct chemical composition and applications, distinguishing it from other types of organo-inorganic compounds.

As this is a leaf node within the HTS structure, there are no further subcategories to explore. The classification of Sodium tetraphenylboron is precise at this level, emphasizing the importance of accurately identifying the chemical structure and intended use for correct customs declaration.