52245

Carmoisine

analytical standard

• Synonym(s): Chromotrope FB, Azorubine, Food red 3, Acid Red 14, Disodium 4-hydroxy-3-[(4-sulfo-1-naphthalenyl)azo]-1-naphthalenesulfonate, Mordant Blue 79
• Empirical Formula (Hill Notation): C₂₀H₁₂N₂Na₂O₇S₂
• CAS Number: 3567-69-9
• Molecular Weight: 502.43
• Colour Index Number: 14720
• EC Number: 222-657-4
• MDL number: MFCD00003978
• UNSPSC Code: 12164500
• PubChem Substance ID: 329757807
• E Number: E122
• NACRES: NA.24

Properties

• grade: analytical standard
• Quality Level: 100
• Assay: ≥98.0% (HPLC)
• shelf life: 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
• SMILES string: [Na+].[Na+].Oc1c(cc(c2ccccc12)S([O-])(=O)=O)\N=N\c3ccc(c4ccccc34)S([O-])(=O)=O
• InChI: 1S/C20H14N2O7S2.2Na/c23-20-15-8-4-3-7-14(15)19(31(27,28)29)11-17(20)22-21-16-9-10-18(30(24,25)26)13-6-2-1-5-12(13)16;;/h1-11,23H,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b22-21+;;
• InChI key: YSVBPNGJESBVRM-ZPZFBZIMSA-L

Description

General description

Carmoisine is a synthetic azo dye, commonly added to food, beverages, medicine, and cosmetics. It is frequently used alone or in combination with Allura red (E 129) and Ponceau 4R synthetic dyes. It is reported to be used for purposes where the food needs to be heat-treated post-fermentation.

Application

Carmoisine may be used as an analytical reference standard for the quantification of the analyte in the following:

• Food samples using spectrophotometric analysis technique.
• Sweets and beverages using differential pulse polarography.
• Synthetic mixtures and beverages using high performance liquid chromatography with diode array detection (HPLC-DAD).

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Flash Point(F): >437.0 °F
• Flash Point(C): > 225 °C