ChemicalBook > CAS DataBase List > SUDAN II

SUDAN II

Product Name
SUDAN II
CAS No.
3118-97-6
Chemical Name
SUDAN II
Synonyms
SUDAN;SUDAN ORANGE;SUDAN 2;CI 12140;1-[(2,4-dimethylphenyl)azo]-2-Naphthalenol;redb;rotb;Red B;Rot B;AKA505
CBNumber
CB0451952
Molecular Formula
C18H16N2O
Formula Weight
276.33
MOL File
3118-97-6.mol
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SUDAN II Property

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

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)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

H351Suspected of causing cancer

Precautionary statements

P201Obtain special instructions before use.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
199656
Product name
Sudan II
Purity
Dye content 90%
Packaging
25g
Price
$51.2
Updated
2024/03/01
Sigma-Aldrich
Product number
07937
Product name
Sudan II
Purity
analytical standard
Packaging
25mg
Price
$167
Updated
2024/03/01
TCI Chemical
Product number
O0101
Product name
Sudan II [=1-(2,4-Xylidylazo)-2-naphthol]
Purity
>93.0%(E)
Packaging
25g
Price
$28
Updated
2024/03/01
Alfa Aesar
Product number
A17613
Product name
Sudan II
Packaging
25g
Price
$29.65
Updated
2024/03/01
Alfa Aesar
Product number
A17613
Product name
Sudan II
Packaging
100g
Price
$86.65
Updated
2024/03/01
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SUDAN II Chemical Properties,Usage,Production

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 II Preparation Products And Raw materials

Raw materials

Preparation Products

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SUDAN II Suppliers

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View Lastest Price from SUDAN II manufacturers

Shanghai Standard Technology Co., Ltd.
Product
Sudan II 3118-97-6
Price
US $0.00/mg
Min. Order
5mg
Purity
≥90%(HPLC)
Supply Ability
10 g
Release date
2019-12-30
Career Henan Chemical Co
Product
SUDAN II 3118-97-6
Price
US $8.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10MT
Release date
2018-12-16

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