Eriochrome blue black R (C.I. 15705), 100 g

Eriochrome Blue Black R (C.I. 15705) is a technically defined substance, identified as a triarylmethane dye. Its molecular formula is C25H21N3O3Cl, with a molecular weight of 439.86 g/mol. This compound belongs to the triarylmethane family, known for their ability to form complexes with metal ions. It is supplied in a pure form, with a purity of 99%, and comes in a pack size of 100 grams. Eriochrome Blue Black R exhibits strong color changes in acidic solutions, making it useful as an indicator for various metal ions, particularly iron(III). Additionally, it has been used in analytical chemistry due to its high sensitivity and selectivity towards certain metal ions.

• CAS Number: 2538-85-4