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SUDAN II

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SUDAN II Basic information

Product Name:
SUDAN II
Synonyms:
  • Sudan scarlet 6g
  • Sudan X
  • sudanorangerpa
  • sudanscarlet6g
  • Waxakol vermilion L
  • waxakolvermilion
  • waxakolvermilionl
  • 1-[(E)-(2,4-Dimethylphenyl)diazenyl]-2-naphthol
CAS:
3118-97-6
MF:
C18H16N2O
MW:
276.33
EINECS:
221-490-4
Product Categories:
  • Organics
Mol File:
3118-97-6.mol
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SUDAN II Chemical Properties

Melting point:
156-158 °C(lit.)
Boiling point:
419.24°C (rough estimate)
Density 
1.1318 (rough estimate)
vapor pressure 
0Pa at 25℃
refractive index 
1.5800 (estimate)
storage temp. 
Hygroscopic, Refrigerator, Under inert atmosphere
solubility 
Chloroform (Slightly), DMSO (Slightly, Heated, Sonicated), Ethyl Acetate (Slight
pka
13.52±0.50(Predicted)
Colour Index 
12140
form 
Powder
color 
Red to orange-brownish
Water Solubility 
54.45μg/L at 25℃
Stability:
Hygroscopic
LogP
6.6
CAS DataBase Reference
3118-97-6
IARC
3 (Vol. 8, Sup 7) 1987
EPA Substance Registry System
C.I. Solvent Orange 7 (3118-97-6)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39-24/25
WGK Germany 
3
RTECS 
QL5850000
TSCA 
Yes
HS Code 
32129000
Hazardous Substances Data
3118-97-6(Hazardous Substances Data)

MSDS

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SUDAN II Usage And Synthesis

Chemical Properties

Red to orange-brownish powder

Uses

Sudan II is a fat soluble red synthetic azo dye. Sudan II is reduced to potentially carcinogenic aromatic amines by human intestinal bacteria. Dyes and metabolites, Environmental Testing.

Definition

ChEBI: Sudan II is a member of azobenzenes.

Preparation

mixed N,N-dimethylaniline diazotization, and Naphthalen-2-ol coupling.

General Description

Red crystals. Insoluble in water.

Air & Water Reactions

Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.

Reactivity Profile

SUDAN II is an azo compound. Toxic gases are formed by mixing azo compounds with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Flammability and Explosibility

Not classified

Safety Profile

Questionable carcinogen with experimental carcinogenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.

Properties and Applications

red orange. Melting point 166 ℃ (from the glacial acetic acid crystallization out). Soluble in ethanol, acetone and benzene as the red orange. In concentrated sulfuric acid for cherry red, dilution still for cherry red, and then into the orange and red brown with precipitation; In concentrated nitric acid for brilliant orange solution, and then gradually become dark; In 10% of sodium hydroxide solution insoluble, for yellow sanguine. Dye alcohol solution to join concentrated hydrochloric acid for orange solution; Add sodium hydroxide to become red.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Good 166 100 Insoluble Well Well

SUDAN IISupplier

J & K SCIENTIFIC LTD.
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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3B Pharmachem (Wuhan) International Co.,Ltd.
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Alfa Aesar
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TCI (Shanghai) Development Co., Ltd.
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021-67121386
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Sales-CN@TCIchemicals.com