2837.20.10.00 - Potassium ferricyanide

This HTS category, 2837.20.10.00, specifically classifies Potassium ferricyanide. Potassium ferricyanide is an inorganic chemical compound, also known as potassium hexacyanoferrate(III), with the chemical formula K₃[Fe(CN)₆]. It is characterized by its distinctive red crystalline structure and is recognized for its use in various industrial and laboratory applications, including blueprinting, photographic processes, and as a laboratory reagent for testing for ferrous ions.

Within the broader classification of "Cyanides, cyanide oxides and complex cyanides" and more specifically "Complex cyanides," this code is distinct from its sibling category, 2837.20.51.00, which covers "Other" complex cyanides. The distinction lies in the specific chemical identity of Potassium ferricyanide, a precisely defined compound, versus the residual or more general category for other complex cyanides not otherwise specified.

As this is a leaf node in the HTS classification structure, there are no further subcategories. Therefore, the focus remains on the precise identification and definition of Potassium ferricyanide, distinguishing it from the broader group of complex cyanides. Classification within this code relies on the confirmation of the substance's identity as Potassium ferricyanide, based on its chemical composition and properties.