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458848

Sigma-Aldrich

Allura Red AC

Dye content 80 %

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:
Molecular Weight:
496.42
Colour Index Number:
16035
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

form

powder

Quality Level

composition

Dye content, 80%

color

red to maroon

mp

>300 °C (lit.)

solubility

water: 53.878 g/L at 25 °C (OECD Test Guideline 105 - soluble)

density

0.448 g/cm3 at 20 °C (at 976.8 hPa - OECD Test)

ε (extinction coefficient)

≥20000 at 501-507 nm in water at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

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

Gene Information

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General description

Allura Red AC is a food azo dye. It is a dark red powder or granules, that is soluble in water and insoluble in ethanol.

Application

Allura Red AC has been used:
  • for the determination of fecal neutral sterols (FNS) in mice
  • to evaluate its developmental toxicity
  • as a coloring reagent for observing the experimental performance of liquid-handling robot

Biochem/physiol Actions

Allura Red AC has been used as a coloring agent and a non-absorbable color marker.

Legal Information

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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