Indigo carmine, dark powder

Supplier: MP Biomedicals
Warning

Synonyms: CI 73015, FD&C Blue #2, 5,5'-Indigodisulphonic acid, Disodium salt, Food blue No. 2, acid Blue 74, Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulphonate, FD and C Blue No. 2, Carmine Blue

0215263805 0215263880
ICNA0215263805EA 77.7 SGD
ICNA0215263805 ICNA0215263880
Indigo carmine, dark powder
Indigo carmine

Indigo Carmine is a blue, anionic indigoid dye.
Indigo Carmine is useful in the staining of Negri bodies. It can be used as a contrast stain for plasma when red nuclear stains are used.


  • Presentation: Dark Powder
  • Soluble in water (3 mg/mL) and ethanol (3 mg/mL).
  • Storage temperature: Store at room Temperature, protect from light.

Formula: C₁₆H₈N₂Na₂O₈S₂
MW: 466,36 g/mol
Melting Pt: ? 300 °C
Storage Temperature: Ambient
MDL Number: MFCD00005723
CAS Number: 860-22-0
EINECS: 212-728-8
Merck Index: 13,04969

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Specification Test Results

Identity Test Passes
UV/Vis: l max (water) 605-615nm

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