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1.11747

Sudan III, C.I. 26100

Synonym(s):

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

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Size/SKUAvailabilityPrice
25 g

Estimated to ship onOctober 19, 2026

$116.00

About This Item

Empirical Formula (Hill Notation):
C22H16N4O
CAS Number:
85-86-9
Molecular Weight:
352.39
UNSPSC Code:
12352104
EC Index Number:
201-638-4
NACRES:
NB.21
MDL number:
MFCD00003905

$116.00

Estimated to ship onOctober 19, 2026Details

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form

solid

Quality Segment

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

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 %

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This Item
0793774033103624
Sudan III, C.I. 26100

Supelco

111747

Sudan III, C.I. 26100

Sudan II analytical standard

Supelco

07937

Sudan II

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

Supelco

74033

Sudan II

Sudan I Dye content ≥95 %

Sigma-Aldrich

103624

Sudan I

description

-

description

analytical standard

description

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

description

Dye content ≥95 %

form

solid

form

-

form

-

form

powder

storage temp.

2-30°C

storage temp.

-

storage temp.

-

storage temp.

room temp

mp

199 °C (decomposition)

mp

156-158 °C (lit.)

mp

156-158 °C (lit.)

mp

131-133 °C (lit.)

loss

≤2% loss on drying, 110°C

loss

-

loss

-

loss

-

Quality Level

200

Quality Level

100

Quality Level

300

Quality Level

200

λmax

506-512 nm in toluene

λmax

-

λmax

-

λmax

-

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

Hazard Classifications

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

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