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Indigokarmin

analytical standard

Synonym(e):

Indigo-5,5′-disulfonsäure Dinatriumsalz, Säureblau 74

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About This Item

Empirische Formel (Hill-System):
C16H8N2Na2O8S2
CAS-Nummer:
860-22-0
Molekulargewicht:
466.35
Farbindexnummer:
73015
Beilstein:
4103904
EG-Nummer:
212-728-8
MDL-Nummer:
MFCD00005723
UNSPSC-Code:
85151701
PubChem Substanz-ID:
329764894
E-Nummer:
E132
NACRES:
NA.24

Qualität

analytical standard

Qualitätsniveau

100

Assay

≥97.0% (HPLC)

Haltbarkeit

limited shelf life, expiry date on the label

Methode(n)

HPLC: suitable
gas chromatography (GC): suitable

Anwendung(en)

cleaning products
cosmetics
food and beverages
personal care

Format

neat

SMILES String

[Na+].[Na+].[O-]S(=O)(=O)c1ccc2NC(\C(=O)c2c1)=C3\Nc4ccc(cc4C3=O)S([O-])(=O)=O

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);;/q;2*+1/p-2/b14-13+;;

InChIKey

KHLVKKOJDHCJMG-QDBORUFSSA-L

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Allgemeine Beschreibung

Indigo carmine (IC), a synthetic indigoid dye, belongs to the class of food dyes used to impart colorless foodstuffs a more characteristic appearance as well as to change the original color, texture of the food products and maintain natural color during processing and storage of food products.
This product is provided by Sigma-Aldrich, as a neat standard for the precise quality control of food products. In the European Union, E numbers are used as codes for food color additives. E numbers 100-199 include not only artificial food colors derived from petroleum, but also natural additives originating from sources such as vegetables, insects or mixtures made from natural foodstuffs. IC is widely used in a variety of food products including fruit juices, bread, smoked fish, sweets, tomatoes, catsup, dairy, skim milk products, etc.

Anwendung

Indigo carmine may be used as a test material to investigate its interaction with the calf thymus DNA in physiological buffer (pH 7.4) with the use of ethidium bromide (EB) dye as a fluorescence probe by spectroscopic studies. It may be used as an analytical reagent for spectrophotometric determination of pantoprazole sodium sesquihydrate (PNT) in pure form and dosage forms using a bromide-bromide mixture. IC may also be used as an analytical reference standard for the quantification of the analyte in food products using microemulsion electrokinetic chromatography (MEEKC).
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Verpackung

Bottomless glass bottle. Contents are inside inserted fused cone.

Empfohlene Produkte

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Piktogramme

Exclamation mark
GHS07

Signalwort

Warning

H-Sätze

H317

Gefahreneinstufungen

Skin Sens. 1

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 1

Choose from one of the most recent versions:

Analysenzertifikate (COA)

Lot/Batch Number
BCCC9643
BCBT7318
BCBD1142V
BCBD1142

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Spectroscopic studies of DNA interactions with food colorant indigo carmine with the use of ethidium bromide as a fluorescence probe
Ma Y, et al.
Journal of Agricultural and Food Chemistry, 60(43), 10867-10875 (2012)
Determination of food colorants by microemulsion electrokinetic chromatography
Huang Y-H, et al.
Electrophoresis, 26(4-5), 867-877 (2005)
O Dohi et al.
Digestion, 86(2), 161-170 (2012-08-15)
To evaluate the usefulness of flexible spectral imaging color enhancement with indigo carmine (I-FICE) in early gastric cancer (EGC) demarcation. The study participants were 29 patients with differentiated-type EGC. The endoscope was fixed and images of the same area of
Three-dimensional staining of liver segments with an ultrasound contrast agent as an aid to anatomic liver resection.
Junichi Shindoh et al.
Journal of the American College of Surgeons, 215(2), e5-10 (2012-06-12)
Intraluminal injection of indigo carmine facilitates identification of the afferent limb during double-balloon ERCP.
T Yano et al.
Endoscopy, 44 Suppl 2 UCTN, E340-E341 (2012-10-04)
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Protokolle

HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18

Separation of Tartrazine; Amaranth; Indigo carmine; New Coccine; Sunset Yellow FCF; Allura Red AC; Fast Green FCF; Erioglaucine disodium salt; Erythrosin B sodium salt; Phloxine B; Rose bengal

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