3118-97-6

Basic information

• Product Name: SUDAN II
• Synonyms: oranzrozpoustedlova7;Ponceau insoluble olg;Pyronalrot R;pyronalrotr;Red B;Red No. 5;redb;redno.5
• CAS NO: 3118-97-6
• Molecular Formula: C₁₈H₁₆N₂O
• Molecular Weight: 276.33
• EINECS: 221-490-4
• Product Categories: Organics
• Mol File: 3118-97-6.mol
• Article Data: 4

Chemical Properties

• Melting Point: 156-158 °C(lit.)
• Boiling Point: 419.24°C (rough estimate)
• Flash Point: 213.6 °C
• Appearance: Red to orange-brownish/Powder
• Density: 1.1318 (rough estimate)
• Vapor Pressure: 1.38E-07mmHg at 25°C
• 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)
• Water Solubility: 54.45μg/L at 25℃
• Stability: Hygroscopic
• CAS DataBase Reference: SUDAN II(CAS DataBase Reference)
• NIST Chemistry Reference: SUDAN II(3118-97-6)
• EPA Substance Registry System: SUDAN II(3118-97-6)

Safety Data

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

Usage

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.

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

Notclassified

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

Standard

Light Fastness

Melting point

Stable

ISO

Good

InChI:InChI=1/C18H16N2O/c1-12-7-9-16(13(2)11-12)19-20-18-15-6-4-3-5-14(15)8-10-17(18)21/h3-11,19H,1-2H3/b20-18+

Upstream product

• 64-17-5 ethanol 
• 95-68-1 2,4-Xylidine 
• 135-19-3 β-naphthol 
• 91-59-8 naphthalen-2-ylamine 
• 108-38-3 m-xylene 
• 52458-03-4 1-(2,4-dimethylphenylazo)-2-aminonaphthalene 
• 67-56-1 methanol 

Downstream Products

• 1253735-64-6 C₁₈H₁₆N₂O*C₄₂H₇₀O₃₅ 
• 127688-02-2 bis-1-(2,4-xylylazo)-2-naphtholate copper(II) 

Related news

An ultrasensitive and selective fluorescence assay for Sudan I and III against the influence of SUDAN II (cas 3118-97-6) andIV07/21/2019

We report on an ultrasensitive and selective fluorescence assay for Sudan I and III against the influence of Sudan II and IV based on ligand exchange mechanism. Calcein as a fluorescence indicator and Sudan I–IV as model analytes were employed to investigate the analytical feature of this assay...detailed

Binding of SUDAN II (cas 3118-97-6) and Sudan IV to bovine serum albumin: Comparison studies07/18/2019

In this paper, we report the interaction of Sudan II and Sudan IV to bovine serum albumin (BSA). Structural analysis showed that both Sudan II and Sudan IV interact mainly with BSA at the hydrophobic pocket and via Van der Waals forces. The number of bound Sudan molecule for each protein molecul...detailed

Comparison of the binding of the dyes SUDAN II (cas 3118-97-6) and Sudan IV to bovine hemoglobin07/16/2019

Sudan dyes are widely used in industry, and sometimes illegally used as food additives despite their potential toxicity. In this work, the interactions of Sudan II and Sudan IV with bovine hemoglobin (BHb) were investigated by fluorescence, synchronous fluorescence, resonance light scattering (R...detailed

Novel electrochemical procedure for sensitive determination of SUDAN II (cas 3118-97-6) based on nanostructured modified electrode and multivariate optimization07/15/2019

Zinc oxide nanoparticles (ZnONPs) were synthesized by precipitation method and used as a novel electrocatalyst for detection of Sudan II dye. The nanoparticles were characterized by X-Ray diffraction spectroscopy and scanning electron microscope techniques. To investigate the electrocatalytic ef...detailed

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