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Merck
CN

1.11747

Sudan III, C.I. 26100

Synonym(s):

Sudan III, C.I. 26100, 1-(4-Phenylazophenylazo)-2-naphthol

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About This Item

Empirical Formula (Hill Notation):
C22H16N4O
CAS Number:
Molecular Weight:
352.39
UNSPSC Code:
12352104
EC Index Number:
201-638-4
NACRES:
NB.21
MDL number:
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form

solid

Quality Level

loss

≤2% loss on drying, 110°C

mp

199 °C (decomposition)

λmax

506-512 nm in toluene

storage temp.

2-30°C

SMILES string

N(\N=C3\c4c(cccc4)C=CC\3=O)c1ccc(cc1)N=Nc2ccccc2

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/h1-15,25H/b24-23?,26-22-

InChI key

HTPQPMPFXUWUOT-SRURNFRUSA-N

Application

Sudan III is a non-ionic fat-soluble dye (lysochrome) that belongs to the class of azo-dye. It is predominantly used for staining lipids, triglycerides, and intracellular lipoproteins. It is also used for coloring textiles, plastics wax, floor polish, varnish, spirit lacquers, externally applied drugs, cosmetics, and contact lenses.

Analysis Note

Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax. (toluene): 506 - 512 nm
Spec. Absorptivity A 1%/1cm (λmax.; 0.005 g/l; Toluol): ≥ 750
TLC-Test: passes test
Loss on drying (110 °C): ≤ 2 %


pictograms

Health hazardExclamation mark

signalword

Warning

Hazard Classifications

Aquatic Chronic 4 - Carc. 2 - Muta. 2 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable



Certificates of Analysis (COA)

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Adrian Weisz et al.
Journal of chromatography. A, 1594, 120-128 (2019-02-05)
The present work describes the application of high-speed counter-current chromatography to the preparative separation of a previously unreported impurity in the color additive D&C Red No. 17 (R17, Colour Index No. 26100, Sudan III). Due to the hydrophobic nature of
TOXICOLOGICAL EFFECT OF SUDAN III AZO DYE IN PALM OIL ON KIDNEY PARAMETERS OF ALBINO RATS
Nwachoko N and Fortune AR
World Journal of Pharmaceutical and Medical Research, 5, 5-11 (2019)
Determination of Sudan III, Sudan IV and Sudan Red 7B in water by high performance liquid chromatography after mixing extraction
NAGASE M, et al.
Analytical Sciences, 5(2), 157-160 (1989)



Global Trade Item Number

SKUGTIN
111747002504022536135557