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199656 Sigma-Aldrich

Sudan II

Dye content 90 %

Synonym: 1-(2,4-Xylylazo)-2-naphthol, Solvent Orange 7

  • CAS Number 3118-97-6

  • Empirical Formula (Hill Notation) C18H16N2O

  • Molecular Weight 276.33

  •  Colour Index Number 12140

  •  EC Number 221-490-4

  •  MDL number MFCD00003896

  •  PubChem Substance ID 24851931

  •  NACRES NA.47

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Properties

Related Categories Cell Biology, Hematology and Histology, S, Stains & Dyes, A to Z, Stains and Dyes More...
form   powder
composition   Dye content, 90%
application(s)   hematology: suitable
  histology: suitable
mp   156-158 °C (lit.)
solubility   chloroform: 10 mg/mL
λmax   493 nm
  604 nm (2nd)
ε (extinction coefficient)   ≥14000 at 491-497 nm in methanol at 0.005 g/L
  ≥9000 at 419-425 nm in methanol at 0.005 g/L
Featured Industry   Diagnostic Assay Manufacturing
storage temp.   room temp
SMILES string   Cc1ccc(\N=N\c2c(O)ccc3ccccc23)c(C)c1
InChI   1S/C18H16N2O/c1-12-7-9-16(13(2)11-12)19-20-18-15-6-4-3-5-14(15)8-10-17(18)21/h3-11,21H,1-2H3/b20-19+
InChI key   JBTHDAVBDKKSRW-FMQUCBEESA-N

Description

Application

Sudan II has been used to determine its presence in commercial spices such as hot chilli food samples (LC–ESI–MS/MS).

Packaging

25 g in glass bottle

Biochem/physiol Actions

Sudan II is a fat-soluble synthetic colorant and it belongs to the group of azo compounds. It is classified by the international agency for research on cancer (IARC) as category 3 carcinogens because it has an ability to cause certain forms of liver and bladder cancer in animals.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
RTECS 
QL5850000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

LC/MS Analysis of Sudan Red Dyes on Ascentis® RP-Amide

From our library of Articles, Sigma-Aldrich presents LC/MS Analysis of Sudan Red Dyes on Ascentis® RP-Amide
Keywords: Chromatography, High performance liquid chromatography, Mass spectrometry

Peer-Reviewed Papers
15

References

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