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Indigo Carmine

Indigo Carmine Suppliers list
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Email: sales@mainchem.com
Products Intro: Product Name:Acid Blue 74
CAS:860-22-0
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: 86-0551-65418684 18949823763
Email: info@tnjchem.com
Products Intro: Product Name:Indigo Carmine
CAS:860-22-0
Purity:99.9% Package:1KG;5USD
Company Name: career henan chemical co
Tel: +86-371-86658258
Email: sales@coreychem.com
Products Intro: Product Name:Indigo Carmine
CAS:860-22-0
Purity:99% Package:1kg;8USD
Company Name: J & K SCIENTIFIC LTD.  
Tel: 400-666-7788 +86-10-82848833
Email: jkinfo@jkchemical.com;market6@jkchemical.com
Products Intro: Product Name:Indigo Carmine, high purity biological stain
CAS:860-22-0
Purity:95.0%(E) Package:100G;25G
Company Name: Meryer (Shanghai) Chemical Technology Co., Ltd.  
Tel: +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
Email: sh@meryer.com
Products Intro: Product Name:Food Blue No. 2
CAS:860-22-0
Purity:>95.0%(E) Package:25g Remarks:F0148

Lastest Price from Indigo Carmine manufacturers

  • Indigo Carmine
  • US $8.00 / kg
  • 2018-12-17
  • CAS:860-22-0
  • Min. Order: 1kg
  • Purity: 99%
  • Supply Ability: 10MT
Indigo Carmine Basic information
Product Name:Indigo Carmine
Synonyms:Disodium 5,5'-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate;CARMINE BLUE;CI 73015;CI NO 73015;BLUE ACID 74;5,5-INDIGO DISULFONIC ACID;5,5'-INDIGODISULFONIC ACID DISODIUM SALT;ACID BLUE 74
CAS:860-22-0
MF:C16H8N2Na2O8S2
MW:466.35
EINECS:212-728-8
Product Categories:Analytical Chemistry;Food Colors by Food Sanitation Law in Japan;Indicator (pH);pH Indicators;Indicator SolutionsTitration;Indicators;Redox Indicators;Titration;Indigoid;Miscellaneous;Indole
Mol File:860-22-0.mol
Indigo Carmine Structure
Indigo Carmine Chemical Properties
Melting point >300°C
density 1.01 g/mL at 20 °C
refractive index n20/D 1.335
storage temp. Store below +30°C.
solubility 1g/l
form Powder/Solid
Colour Index 73015
color Very dark blue to purple
PH7 (10g/l, H2O, 20℃)
PH Range11.5(blue)-14.0(yellow)
Water Solubility 1 g/100 mL (25 ºC)
Sensitive Light Sensitive
λmax608nm
Merck 14,4944
BRN 4103904
Stability:Stable. Incompatible with strong oxidizing agents.
Biological ApplicationsDetecting microorganisms; treating amyloidosis,testicular cancer; medical devices; drug delivery system
Major ApplicationDisplay 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 Reference860-22-0(CAS DataBase Reference)
EPA Substance Registry System1H-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)
Safety Information
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
TSCA Yes
HS Code 32041200
ToxicityLD50 orally in Rabbit: > 2000 mg/kg
Indigo Carmine Usage And Synthesis
DescriptionIndigo 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 Propertiespurple powder
Uses5,5’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.
UsesIndigo Carmine (FD&C Blue #2) is a colorant. It has poor ph stability in that after 1 week at ph 3 and 5 it will appreciably fade, at ph 7 considerably fade, and at ph 8 fade completely. It is the least soluble of all food colors, with a solubility of 1.6 g in 100 ml of water at 25°c. Complete fading occurs in alkalis such as 10% sodium carbonate and 10% sodium hydroxide, with fading also occurring in 10% sugar systems. It has very poor light stability and oxidation stability, and moderate stability to heat; it has a deep blue hue with poor tinctorial strength. It is the only food color that has good resistance to reducing agents, but has very poor compatibility with food components. The major use is in pet food, but it is also used in candies, confections, and baked goods. The common name is indigotine.
UsesColorant for nylon, surgical sutures, foods and ingested drugs. As a reagent for functional kidney tests, for detection of nitrates, chlorates and in testing milk.
DefinitionChEBI: 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.
Brand nameIndigo Carmine (Becton Dickinson Microbiology).
General DescriptionIndigo to dark blue powder.
Air & Water ReactionsWater soluble.
Reactivity ProfileSensitive to light. Very sensitive to oxidizing agents. Color is readily discharged by nitric acid, chlorates, etc. Color of aqueous solutions fades on standing.
Fire HazardFlash point data for Acid Blue 74 is not available, but Acid Blue 74 is probably combustible.
Purification MethodsIts solubility in H2O is 1g/100mL at 25o. It has been purified by dissolving in H2O, filtering and adding EtOH to cause the salt to separate. Wash the solid with EtOH, Et2O and dry in vacuo. [V.rlander & Schubert Chem Ber 34 1860 1901, UV: Smit et al. Anal Chem 27 1159 1955, Preisler et al. J Am Chem Soc 81 1991 1959, Beilstein 25 IV 1975.]
ReferencesAmerican Society of Health-system Pharmacist.
Journal of Environmental Protection, 2016, 7, 1693-1706
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