Indigo Carmine, Reagent, ACS

Molecular Formula
C16H8N2O8S2Na2
Catalog Number
I3281
Supplier/Brand
Spectrum Chemical
CAS Number
860-22-0

Indigo Carmine, Reagent, ACS, also known as 5,5'-indigodisulfonic acid sodium salt, is a pH indicator. As an ACS grade quality reagent, its chemical specifications are the de facto standards for chemicals used in many high-purity applications and typically designate the highest quality chemical available for laboratory use. Spectrum Chemical manufactured Reagent ACS grade products meet the toughest regulatory standards for quality and purity.


Synonyms: Acid Blue 74 ; Carmine Blue ; Indigotine

Shipping Information


Tariff No. 3204133900

Storage Information

LIGHT SENSITIVE: Keep tightly closed in light-resistant containers.

Certificates of Analysis

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2023