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Indigo Carmine

Indigo Carmine
Indigo Carmine
Chemical Name:
Indigo Carmine
E132;Was35;l-blau2;murabba;1311blue;CI 73015;Greell S;12070blue;acidbluew;c.i.75781
Molecular Formula:
Formula Weight:
MOL File:

Indigo Carmine Properties

Melting point:
1.01 g/mL at 20 °C
refractive index 
n20/D 1.335
storage temp. 
Store below +30°C.
Colour Index 
Very dark blue to purple
7 (10g/l, H2O, 20℃)
PH Range
Water Solubility 
1 g/100 mL (25 ºC)
Light Sensitive
Stable. Incompatible with strong oxidizing agents.
Biological Applications
Detecting microorganisms; treating amyloidosis,testicular cancer; medical devices; drug delivery system
Major Application
Display device, sensor, chemical-mechanical polishing, batteries, photographic materials, thermoplastics, inks, highlighters, detergents, disinfectants, rodenticide, colored bubbles, hair dyes, cosmetics, food, determine bacterial growth, antiischemic Magents, antiseptic, antitumor agents, Alzheimer’s disease, psychoactive drugs, Tooth whitening
CAS DataBase Reference
860-22-0(CAS DataBase Reference)
EPA Substance Registry System
1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo- 2H-indol-2-ylidene)-2,3-dihydro- 3-oxo-, disodium salt(860-22-0)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xn,Xi
Risk Statements  22-36/37/38
Safety Statements  22-24/25-36/37/39-27-26
WGK Germany  3
RTECS  DU3000000
HS Code  32041200
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
Precautionary statements:
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P330 Rinse mouth.
P501 Dispose of contents/container to..…

Indigo Carmine price More Price(14)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 131164 Indigo carmine certified by the Biological Stain Commission, Dye content 85% 860-22-0 25g $41.9 2017-11-08 Buy
Sigma-Aldrich 1.04724 Indigo carmine (C.I. 73015) for analysis 860-22-0 1EA $54.5 2017-11-08 Buy
TCI Chemical F0148 Food Blue No. 2 860-22-0 25g $95 2017-11-08 Buy
TCI Chemical I0214 Indigo Carmine >95.0%(E) 860-22-0 25g $29 2017-11-08 Buy
Alfa Aesar A16052 Indigo carmine 860-22-0 25g $23.2 2017-11-08 Buy

Indigo Carmine Chemical Properties,Uses,Production


Indigo carmine is indigotindisulfonate sodium, a marker dye used during cystoscopy and ureteral catheterization.
(1) Indigo carmine is also used in endoscopic procedures, lymph node and vessel delineation, and for tumor localization. Indigo carmine is an unapproved drug without FDA approved labeling.
(2) There is no single dye that can replace indigo carmine. Choice of alternative agent will depend on type of procedure and physician discretion, as well as product availability.
Indigo Carmine (IC) is the most common chemical dye for clothes dyeing, which is considered as a refractory molecule since it is required a rather strong chemical treatment for its elimination from the water waste. The presence of this dye in residuals causes notorious change of water color and smell even in very low concentration. Moreover, if some of this water reaches natural streams it can be toxic for aquatic living entities due to the formation of toxic compounds such as aromatic amines.

Chemical Properties

purple powder


5,5’Indigodisulfonic Acid Disodium Salt is a food additive that is widely used in the market. 5,5’Indigodisulfonic Acid Disodium Salt was also used as a dye for cationic cotton fabrics.


ChEBI: An organic sodium salt resulting from the formal condensation of indigo carmine (acid form) with two equivalents of sodium hydroxide. It is an indicator at pH 11.5-14, changing from blue to yellow.


Colorant for nylon, surgical sutures, foods and ingested drugs. As a reagent for functional kidney tests, for detection of nitrates, chlorates and in testing milk.

General Description

Indigo to dark blue powder.

Air & Water Reactions

Water soluble.

Reactivity Profile

Sensitive to light. Very sensitive to oxidizing agents. Color is readily discharged by nitric acid, chlorates, etc. Color of aqueous solutions fades on standing.

Fire Hazard

Flash point data for Acid Blue 74 is not available, but Acid Blue 74 is probably combustible.


American Society of Health-system Pharmacist.
Journal of Environmental Protection, 2016, 7, 1693-1706

Indigo Carmine Preparation Products And Raw materials

Raw materials

Preparation Products

Indigo Carmine Suppliers

Global( 172)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32767 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1410 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96817 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40398 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30309 84
TCI (Shanghai) Development Co., Ltd. 800-988-0390
021-67121385 China 22830 81
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44192 61
BePharm Ltd 40068-59117; 86-21-51816456-8021/8022/8023
+86-21-51816740 (China Mainland); +86-21-51816457 (Others) China 24692 61
Adamas Reagent, Ltd. 400-600-9262 China 14018 59
Chemfun Medical Technology(Shanghai) Co., Ltd. 021-67220633 & 021-37212706
+86-21-67220638 China 21899 59

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