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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:
85-86-9
Molecular Weight:
352.39
MDL number:
MFCD00003905
UNSPSC Code:
12352104
EC Index Number:
201-638-4
NACRES:
NB.21

form

solid

Quality Level

200

loss

≤2% loss on drying, 110°C

mp

199 °C (decomposition)

λmax

506-512 nm in toluene

storage temp.

2-30°C

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

Related Categories

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 %

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
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
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)
Lorna Spagnol et al.
Journal of pediatric surgery, 46(5), 994-997 (2011-05-28)
Congenital chylous ascites is a rare entity, and surgical treatment is confined to selected intractable cases. We report 2 cases of refractory congenital chylous ascites successfully treated with preoperative administration of lipophilic dye (Sudan III) followed by abdominal systematic surgical

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