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458848

Sigma-Aldrich

Allura Red AC

Dye content 80 %

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Synonym(s):
Disodium 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-2-naphthalenesulfonate
Empirical Formula (Hill Notation):
C18H14N2Na2O8S2
CAS Number:
Molecular Weight:
496.42
Colour Index Number:
16035
EC Number:
MDL number:
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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This Item
365548O0625N7005
Allura Red AC Dye content 80 %

458848

Allura Red AC

Direct Red 80 Dye content 25 %

365548

Direct Red 80

Oil Red O certified by the Biological Stain Commission

O0625

Oil Red O

Neutral Red Dye content ≥90 %

N7005

Neutral Red

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

storage temp.

2-8°C

composition

Dye content, 80%

composition

Dye content, 25%

composition

Dye content, ≥75%

composition

Dye content, ≥90%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

λmax

504 nm

λmax

528 nm

λmax

-

λmax

-

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

13 - Non Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


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Study of strawberry flavored milk under pulsed electric field processing
Aguirre DB, et al.
Food Research International, 43 (2010)
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Biofilms are composed of bacterial cells encased in a self-synthesized, extracellular polymeric matrix. Poly-beta(1,6)-N-acetyl-d-glucosamine (PNAG) is a major biofilm matrix component in phylogenetically diverse bacteria. In this study we investigated the physical and chemical properties of the PNAG matrix in
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