EMAIL THIS PAGE TO A FRIEND
38213 Sigma-Aldrich

Allura Red AC

analytical standard

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

  • CAS Number 25956-17-6

  • Empirical Formula (Hill Notation) C18H14N2Na2O8S2

  • Molecular Weight 496.42

  •  Colour Index Number 16035

  •  EC Number 247-368-0

  •  MDL number MFCD00059526

  •  PubChem Substance ID 329755751

  •  E Number E129

Purchase

Properties

Related Categories Additional Standards, All Alphabetically Sorted, All alphabetical sorted, Analytical Standards, Analytical/Chromatography,
grade   analytical standard
InChI Key   CEZCCHQBSQPRMU-LLIZZRELSA-L
assay   ≥98.0% (HPLC)
form   neat
application(s)   HPLC: suitable
  gas chromatography (GC): suitable
mp   >300 °C(lit.)
format   neat

Description

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Application

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

General description

Allura Red AC belongs to the class of monoazo dyes. It comprises of 6-hydroxy-5-(2-methoxy-5-methyl-4-sulfonate-phenylazo)-2-napthalene-sulfonate, which is basically an azo-coupling product between the meta-isomer of cresidine-p-sulphonic acid (CSA) and Schaeffer′s salt (SS). It exists in the form of dark red powder or granules and finds application in being used in food colors. It is soluble in water and is insoluble in ethanol.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
QK2260000

Same Products - New Packaging
Protocols & Articles

Articles

HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18
Keywords: Chromatography, High performance liquid chromatography

Peer-Reviewed Papers
15

References

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?