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S4131

Sigma-Aldrich

Sudan III

Technical grade

Synonym(s):

1-[4-(Phenylazo)phenylazo]-2-naphthol, Cerasin Red, Fat Ponceau G, Fat Soluble Sudan, Scarlet B, Solvent Red 23, Sudan G, Sudan Red BK, Tony Red

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About This Item

Empirical Formula (Hill Notation):
C22H16N4O
CAS Number:
85-86-9
Molecular Weight:
352.39
Colour Index Number:
26100
Beilstein/REAXYS Number:
931185
EC Number:
201-638-4
MDL number:
MFCD00003905
UNSPSC Code:
12171500
PubChem Substance ID:
24899586
NACRES:
NA.47

grade

technical grade

Quality Level

200

form

powder

composition

Dye content, ≥85%

mp

199 °C (dec.) (lit.)

solubility

chloroform: 1 mg/mL, clear, red

λmax

508-512 nm in ethanol

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc2ccccc2c1\N=N\c3ccc(cc3)\N=N\c4ccccc4

InChI

1S/C22H16N4O/c27-21-15-10-16-6-4-5-9-20(16)22(21)26-25-19-13-11-18(12-14-19)24-23-17-7-2-1-3-8-17/h1-15,27H/b24-23+,26-25+

InChI key

FHNINJWBTRXEBC-QSZPNPOGSA-N

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General description

Sudan III is a non-ionic lipophilic dye. It belongs to the class of azo dyes. Sudan III is used for tissue ceroid and lipofuscin analysis and blood-cell staining. It is used to color waxes, oils and spirit varnishes. Sudan III stains triglycerides in frozen sections.

Application

Sudan III has been used as an absorber to make turbid phantoms. It has also been used as a colorant to determine emulsification capacity.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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