Congo Red

Molecular Formula
C32H22N6O6S2Na2
Catalog Number
CO128
Supplier/Brand
Spectrum Chemical
CAS Number
573-58-0

Congo Red, a secondary diazo dye, is soluble in organic solvents such as ethanol. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.


Synonyms: Direct Red 28 ; Disodium 3,3-[Biphenyl-4,4-diylbis(azo)]bis[4-aminonaphthalene-1-sulphonate]

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2023