Skip to Content
Merck
All Photos(1)

Key Documents

1.11747

Supelco

Sudan III, C.I. 26100

Synonym(s):

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

Sign Into View Organizational & Contract Pricing
All Photos(1)

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
Pricing and availability is not currently available.

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

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

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
07937740338.41435
Sudan III, C.I. 26100

1.11747

Sudan III, C.I. 26100

Sudan II analytical standard

07937

Sudan II

Sudan II certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

74033

Sudan II

4-(4-Nitrophenylazo)-1-naphthol for synthesis

8.41435

4-(4-Nitrophenylazo)-1-naphthol

loss

≤2% loss on drying, 110°C

loss

-

loss

-

loss

-

mp

199 °C (decomposition)

mp

156-158 °C (lit.)

mp

156-158 °C (lit.)

mp

277-280 °C (decomposition)

λmax

506-512 nm in toluene

λmax

-

λmax

-

λmax

-

storage temp.

2-30°C

storage temp.

-

storage temp.

-

storage temp.

2-30°C

Quality Level

200

Quality Level

100

Quality Level

300

Quality Level

200

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.[1][2][3][4]

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

  • Specification Sheet

    • 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’.

    Already Own This Product?

    Find documentation for the products that you have recently purchased in the Document Library.

    Visit the Document Library

    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)
    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

    Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

    Contact Technical Service