1. Dye Reagents
  2. Indigo carmine

Indigo carmine (Synonyms: Indigotindisulfonate sodium; C.I.Acid Blue 74)

Cat. No.: HY-W040226 Purity: ≥96.0%
Handling Instructions

Indigo carmine is an efficient reagent for the determination of ozone by chemlluminescence (CL).

For research use only. We do not sell to patients.

Indigo carmine Chemical Structure

Indigo carmine Chemical Structure

CAS No. : 860-22-0

Size Price Stock Quantity
500 mg USD 50 In-stock
Estimated Time of Arrival: December 31
1 g   Get quote  
5 g   Get quote  

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Based on 1 publication(s) in Google Scholar

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Indigo carmine is an efficient reagent for the determination of ozone by chemlluminescence (CL)[1].

In Vitro

Indigo carmine in a 0.2% aqueous solution is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial
Molecular Weight





Room temperature in continental US; may vary elsewhere.


4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O : 18.52 mg/mL (39.71 mM; Need ultrasonic)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.1443 mL 10.7216 mL 21.4431 mL
5 mM 0.4289 mL 2.1443 mL 4.2886 mL
10 mM 0.2144 mL 1.0722 mL 2.1443 mL
*Please refer to the solubility information to select the appropriate solvent.
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This equation is commonly abbreviated as: C1V1 = C2V2

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