CAS 860-22-0
:Indigo carmine
Description:
Indigo carmine, also known as indigotindisulfonic acid, is a synthetic dye characterized by its deep blue color. It is commonly used in various applications, including as a food coloring agent (E132), in pharmaceuticals, and in biological staining. The chemical formula for indigo carmine is C16H8N2Na2O8S2, indicating that it contains both sodium and sulfonate groups, which enhance its solubility in water. This compound exhibits excellent stability under normal conditions, but it can degrade when exposed to strong acids or bases. Indigo carmine is known for its ability to absorb light in the visible spectrum, making it useful in colorimetric assays. Additionally, it has been utilized in medical diagnostics, particularly in procedures such as renal function tests. Safety data indicate that indigo carmine is generally regarded as safe for use in food and pharmaceuticals, although some individuals may experience allergic reactions. Overall, its vibrant color and versatility make indigo carmine a valuable compound in various fields.
Formula:C16H10N2O8S2·2Na
InChI:InChI=1S/C16H10N2O8S2.2Na/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;
InChI key:InChIKey=BBHXOPLQIHJZNV-UHFFFAOYSA-N
SMILES:O=C1C(NC=2C1=CC(S(=O)(=O)O)=CC2)=C3C(=O)C=4C(N3)=CC=C(S(=O)(=O)O)C4.[Na]
Synonyms:- Dinatrium-5,5'-(2-(1,3-dihydro-3-oxo-2H-indazol-2-yliden)-1,2-dihydro-3H-indol-3-on)disulfonat
- Indigotin
- Indigotine
- C.I. Food Blue 1
- 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt
- C.I. Acid Blue 74
- C.I. Acid Blue 74
- disodium 5,5-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate
- 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, sodium salt (1:2)
- disodium 5,5-indigodisulphonate
- 1H-indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt, (2E)-
- Indigotindisulfonate Sodium [USAN]
- 5,5-Indigodisulfonic acid, disodium salt
- C.I. Food Blue 1, disodium salt
- Acid Blue 74
- Indigo-5,5-disulphonic acid disodium salt
- C.I. 75781
- E 132
- disodium (2E)-3,3'-dioxo-1,1',3,3'-tetrahydro-2,2'-biindole-5,5'-disulfonate
- C.I. Natural Blue 2
- [Δ2,2′-Biindoline]-5,5′-disulfonic acid, 3,3′-dioxo-, disodium salt
- See more synonyms
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Indigo Carmine
CAS:Formula:C16H8N2Na2O8S2Purity:>95.0%(E)Color and Shape:Dark red to Dark purple to Dark blue powder to crystalMolecular weight:466.35Food Blue No. 2
CAS:Formula:C16H8N2Na2O8S2Color and Shape:Deep Blue - Deep Purple SolidMolecular weight:466.35Indigo carmine
CAS:Useful in the staining of Negri bodiesIndigo carmine is used as a food colorant, pH indicator and dissolved ozone indicator. It is used to detect amino fluid leaks, highlight portions of the urinary tract, tissue stains and tool for the determination of hypochlorite. As a dye in renal function, it iFormula:C16H8N2Na2O8S2Color and Shape:Dark blue or dark purple to black, Powder or crystalline powderMolecular weight:466.35Indigotindisulfonate Sodium
CAS:Acid dyes, whether or not premetallized, and preparations based thereon; mordant dyes & preparations based thereonFormula:C16H8N2Na2O8S2Color and Shape:Dark Blue Violet SolidMolecular weight:465.95175Indigo Carmine
CAS:Indigo CarmineFormula:C16H8N2Na2O8S2Purity:85%Color and Shape:SolidMolecular weight:466.35Indigo Carmine (C.I. 73015)
CAS:Formula:C16H8N2Na2O8S2Purity:≥ 85.0% (anhydrous basis)Color and Shape:Blue to dark purple powderMolecular weight:466.36Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonate
CAS:Formula:C16H8N2Na2O8S2Purity:80%Color and Shape:SolidMolecular weight:466.3529Indigo carmine (Standard)
CAS:Indigo carmine (Standard) is the standard for Indigo carmine (T19755). Indigo carmine (Fd&c blue no. 2) is a synthetic blue food colorant; in addition to being a dye, it can directly serve as a model substrate in visible-light photocatalytic degradation research, used to evaluate the degradation performance of photocatalytic systems such as TiO₂, CeO₂, and g-C₃N₄ toward organic dyes. In bacteriophage research, Indigo carmine shows selective inactivation against DNA phages P001, T4, T1, T7, and λ, with EC₅₀ of 0.006-0.105 mg/mL, while no obvious activity was observed against RNA phage MS2. Indigo carmine can selectively bind double-stranded DNA and promote phage genome release and capsid deformation, and under specific experimental conditions can reduce phage titers by up to approximately 7-log. Indigo carmine can therefore be used in research on photocatalytic dye degradation, phage inactivation, and DNA interactions.Formula:C16H8N2Na2O8S2Molecular weight:466.35Indigotine 100 µg/mL in Acetonitrile:Water
CAS:Controlled ProductFormula:C16H8N2O8S2·2NaColor and Shape:Single SolutionMolecular weight:466.35Indigo Carmine
CAS:Controlled ProductStability Light Sensitive
Applications Indigo carmine is a dye consisting of an indigo dimer with sodium salts of sulfonic acids at positions 5 and 5'. This compound has been used as a tissue stain, pH indicator, and tool for the determination of hypochlorite in solutions.
References 1. Reinle, G.G. and Depuy, E.S. 1920. Cal State J Med. 18: 49-52. PMID: 187381042. Monson, F.C., et al. 1991. J. Urol. 145: 842-845. PMID: 20057163. Harriram, A., et al. 2003. J Environ Sci Health A Tox Hazard Subst Environ Eng. 3: 1055-1064. PMID: 127749084. Archer, T.L. 2009. J Clin Anesth. 21: 544-546. PMID: 200062695. Lee, B.E., et al. 2010. BMC Gastroenterol. 10 97. PMID: 207318306. Park, H.J., et al. 2010. J Clin Ultrasound. 38: 305-308. PMID: 20544866Formula:C16H8N2O8S2·2NaColor and Shape:NeatMolecular weight:466.355,5’-Indigodisulfonic Acid Disodium Salt (Technical Grade)
CAS:Stability Hygroscopic
Applications 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. Dyes and metabolites, Environmental Testing.
References Ma, Y.D., et al.: J. Agric. Chem., 60, 10867 (2012); Sarikaya, R., et al.: Chemosphere, 8, 974 (2012); Zhang, W., et al.: Yinran., 37, 25 (2011);Formula:C16H8N2O8S2·2NaPurity:85%Color and Shape:NeatMolecular weight:466.35Indigo carmine
CAS:Indigo carmine (NSC-8646) is an indolesulfonic acid. It is used as a dye in renal function testing for the detection of nitrates and chlorates.Formula:C16H8N2Na2O8S2Purity:99.85%Color and Shape:Dark Blue-Violet Powder Having Metallic Luster Of Copper Solid PowderMolecular weight:466.35
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