199656

Sigma-Aldrich

Sudan II

Dye content 90 %

Synonym(s):
Solvent Orange 7, 1-(2,4-Xylylazo)-2-naphthol
Empirical Formula (Hill Notation):
C18H16N2O
CAS Number:
Molecular Weight:
276.33
Colour Index Number:
12140
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

Quality Level

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

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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.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Simultaneous determination of water-soluble and fat-soluble synthetic colorants in foodstuff by high-performance liquid chromatography-diode array detection-electrospray mass spectrometry.
Ma M
Journal of Chromatography A, 1103, 170-176 (2006)
Ting Xu et al.
Analytical biochemistry, 405(1), 41-49 (2010-06-05)
To obtain antibodies to develop an enzyme-linked immunosorbent assay (ELISA) for the analysis of Sudan red I, haptens were designed and synthesized via four different strategies: (i) attachment of a spacer at the para position of the benzene ring, (ii)...
Shane T Finn et al.
Photochemistry and photobiology, 87(5), 1184-1188 (2011-06-15)
We describe a screening methodology that can be used to quickly determine the effectiveness of newly synthesized photocatalysts. We were particularly interested in measuring the destruction of organic molecules painted onto a photocatalytic surface by spraying, with destruction proceeding in...
Shuo Sun et al.
Journal of separation science, 34(14), 1730-1737 (2011-06-10)
The liquid-liquid microextraction (LLME) was developed for extracting sudan dyes from red wine and fruit juice. Room temperature ionic liquid was used as the extraction solvent. The target analytes were determined by high-performance liquid chromatography. The extraction parameters were optimized....
Determination of banned Sudan dyes in chili powder by capillary electrophoresis
Mejia E
Food Chemistry, 102, 1027-1033 (2007)

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