Merck
CN
All Photos(2)

52245

Supelco

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:
Molecular Weight:
502.43
Colour Index Number:
14720
EC Number:
MDL number:
PubChem Substance ID:
E Number:
E122
NACRES:
NA.24

grade

analytical standard

Quality Level

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

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General description

Carmoisine is a synthetic azo dye, commonly added to food, beverages, medicine, and cosmetics.[1] It is frequently used alone or in combination with Allura red (E 129) and Ponceau 4R synthetic dyes.[2] It is reported to be used for purposes where the food needs to be heat-treated post-fermentation.[3]

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.[1]
  • Sweets and beverages using differential pulse polarography.[2]
  • Synthetic mixtures and beverages using high performance liquid chromatography with diode array detection (HPLC-DAD).[4]

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.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

437.0 °F

Flash Point(C)

> 225 °C

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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