Eriochrome blue black B (C.I. 14640), 5 g, glass

Eriochrome Blue Black B (C.I. 14640) finds application across laboratory and industrial settings. It is an organic compound with the molecular formula C27H28ClN4O6S and a molecular weight of 619.05 g/mol. This compound belongs to the azo dye family due to its structure containing a diazo group. It is available in a pure grade, glass packaging, and offered in a pack size of 5 grams. Eriochrome Blue Black B is commonly used as a metal indicator, particularly for copper(II) and iron(III). Additionally, it exhibits strong light absorption in the visible spectrum, making it useful in various analytical chemistry techniques.

• CAS Number: 3564-14-5