73436

Indigo carmine

analytical standard

• Synonyme(s) : Acid Blue 74, Indigo-5,5′-disulfonic acid disodium salt, Indigocarmine
• Formule empirique (notation de Hill): C₁₆H₈N₂Na₂O₈S₂
• Numéro CAS: 860-22-0
• Poids moléculaire : 466.35
• Numéro C.I. (Colour Index): 73015
• Numéro Beilstein : 4103904
• Numéro CE : 212-728-8
• Numéro MDL: MFCD00005723
• Code UNSPSC : 85151701
• ID de substance PubChem : 329764894
• Numéro E: E132
• Nomenclature NACRES : NA.24

Propriétés

• Qualité: analytical standard
• Niveau de qualité: 100
• Pureté: ≥97.0% (HPLC)
• Durée de conservation: limited shelf life, expiry date on the label
• Technique(s): HPLC: suitable; gas chromatography (GC): suitable
• Application(s): cleaning products; cosmetics; food and beverages; personal care
• Format: neat
• Chaîne SMILES: [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+;;
• Clé InChI: KHLVKKOJDHCJMG-QDBORUFSSA-L

Description

Description générale

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.

Application

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.

Conditionnement

Bottomless glass bottle. Contents are inside inserted fused cone.

Produits recommandés

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Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H317
• Conseils de prudence: P261 - P272 - P280 - P302 + P352 - P333 + P313 - P362 + P364
• Classification des risques: Skin Sens. 1
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1