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Supelco

Allura Red AC

analytical standard

Synonym(s):

Disodium 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-2-naphthalenesulfonate

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About This Item

Empirical Formula (Hill Notation):
C18H14N2Na2O8S2
CAS Number:
25956-17-6
Molecular Weight:
496.42
Colour Index Number:
16035
EC Number:
247-368-0
MDL number:
MFCD00059526
UNSPSC Code:
12164500
PubChem Substance ID:
329755751
E Number:
E129
NACRES:
NA.24

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

mp

>300 °C (lit.)

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

SMILES string

[Na+].[Na+].COc1cc(c(C)cc1\N=N\c2c(O)ccc3cc(ccc23)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C18H16N2O8S2.2Na/c1-10-7-14(16(28-2)9-17(10)30(25,26)27)19-20-18-13-5-4-12(29(22,23)24)8-11(13)3-6-15(18)21;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2/b20-19+;;

InChI key

CEZCCHQBSQPRMU-LLIZZRELSA-L

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General description

Allura red AC (E29) is a mono azo dye, added as a synthetic colorant to various drinks, juices, bakery, meat, and sweets products. It has been approved for use as a food additive by European Union (EU) Register as per Annex I of Directive 94/36/EC. The USA Food and Drug Administration (FDA) has approved its use in food, drugs, and cosmetics as a substitution for amaranth (Red 2) and erythrosine (Red 3). It is commonly known as Food Red No. 40 and Food, Drug, and Cosmetics Red No. 40 (FD&C Red No. 40).

Application

The analytical standards can also be used as follows:
  • Hydrophobic deep eutectic solvents (HDES) based liquid-phase microextraction (LPME) of Allura Red AC and tartrazine in food samples for their quantification by UV-Vis spectrophotometry
  • Nanomolar-level determination of Allura red in soft drink powder samples using a voltammetric electrochemical sensor based on a glassy carbon electrode (GCE) modified with cross-linked chitosan film incorporated with carbon black particles and ionic liquid,1 -butyl-3-methylimidazolium tetrafluoroborate
  • Simultaneous analysis of Sunset Yellow FCF, Allura Red AC, Quinoline Yellow WS, and Tartrazine in gummy bears, chewing gum, and sweet candy samples by reversed phase-high-performance liquid chromatography (RP-HPLC) coupled with UV detection
  • Construction of an electrochemical sensor based on cobalt complex decorated carbon paste electrode (CoC/CPE) for the cyclic voltametric determination of tartrazine, sunset yellow, and Allura red in gelatin and pharmaceutical dosages of acetaminophen
  • Multi-residue analysis of 20 synthetic dyes in 18 chili powders and six syrup-preserved fruit samples by liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

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

Recommended products

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.

Legal Information

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCBC4108V
BCBC4108

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Tartrazine Dye content ≥85 %

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Sunset Yellow FCF Dye content 90 %

Sigma-Aldrich

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Green S analytical standard

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06737

Green S

Erioglaucine disodium salt coloring dye

Sigma-Aldrich

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Erioglaucine disodium salt

Quinoline Yellow 2SF analytical standard

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Quinoline Yellow 2SF

Brilliant Black BN analytical standard

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11220

Brilliant Black BN

6-(p-Toluidino)-2-naphthalenesulfonic acid sodium salt

Sigma-Aldrich

T9792

6-(p-Toluidino)-2-naphthalenesulfonic acid sodium salt

Amaranth Dye content 85-95 %

Sigma-Aldrich

A1016

Amaranth

Spectroscopic characterization of SC-NTR: A subsidiary dye of Allura Red AC dye (FD&C Red No. 40).
Yuiko T
Food Additives and Contaminants, 11 (1), 97-104 (1994)
Nilda R Marsili et al.
The Analyst, 130(9), 1291-1298 (2005-08-13)
This article reports on the first application of a modified version of the bilinear least-squares model to absorbance-pH second-order data recorded for complex samples. The latter are composed of fruit drink powders, where four different analytes and additional background components
Ahmad H Alghamdi
Journal of AOAC International, 88(5), 1387-1393 (2006-01-03)
Square wave (SW) voltammetry was used to explore the adsorption properties of the food additive dye Allura Red on a hanging mercury drop electrode (HMDE). By using the adsorptive stripping voltammetric approach, we developed a sensitive electroanalytical method for the
Mustafa Soylak et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 49(5), 1183-1187 (2011-02-26)
A new, simple, rapid and sensitive solid phase extraction procedure based on separation and preconcentration of trace levels of allura red in water samples on MCI GEL CHP20P column system has been established. Optimal analytical conditions including pH, amount of
Takeshi Serizawa et al.
Langmuir : the ACS journal of surfaces and colloids, 21(17), 7739-7742 (2005-08-11)
The anionic dyes methyl orange (MO) and allura red (AR) were used as model drugs to assess the loading and release by layer-by-layer assembled ultrathin hydrogels prepared via the amide formation of poly(acrylic acid-co-N-isopropylacrylamide) with AAc contents of 5, 10
View All Related Papers

Protocols

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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