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3118-97-6

Basic Information
CAS No.: 3118-97-6
Name: SUDAN II
Article Data: 10
Molecular Structure:
Molecular Structure of 3118-97-6 (SUDAN II)
Formula: C18H16N2O
Molecular Weight: 276.338
Synonyms: SudanⅡ;2-Naphthalenol,1-[(2,4-dimethylphenyl)azo]- (9CI);C.I. Solvent Orange 7 (7CI,8CI);Sudan Red(6CI);Brasilazina Oil Scarlet 6G;C.I. 12140;Cerisol Scarlet G;FD and C RedNo. 32;Fast Oil Orange II;Fat Scarlet 2G;Grasan Orange 3R;Japan Red 505;Lacquer Orange VR;NSC 10457;Oil Orange 2R;OilOrange KB;Oil Orange N Extra;Oil Orange R;Oil Orange XO;OilRed XO;Oil Scarlet;Oil Scarlet 6G;Oil Scarlet BL;Red 505;Red No. 5;Resin Scarlet 2R;SomaliaOrange 2R;Somalia Orange A 2R;Sudan 2;Sudan Orange RPA;Sudan orange;
EINECS: 221-490-4
Density: 1.14 g/cm3
Melting Point: 156-158 °C
Boiling Point: 429.6 °C at 760 mmHg
Flash Point: 213.6 °C
Solubility: 54.45μg/L at 25℃
Appearance: Red to orange-brownish powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-37/39
PSA: 44.95000
LogP: 5.57760
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Chemistry

IUPAC Name: 1-[(2,4-Dimethylphenyl)hydrazinylidene]naphthalen-2-one
Molecular Formula: C18H16N2
Formula Weight: 276.36g/mol
EINECS: 221-490-4
Appearance: salmon pink powder
Density: 1.14g/cm3
Melting Point: 156-158 °C
Boiling point: 429.6 °C at 760 mmHg
Refractive index: 1.615 
Molar Refractivity: 84.44 cm3
Polarizability: 33.47 10-24 cm3
Surface tension: 41.8 dyne/cm 
Enthalpy of Vaporization: 76.87 kJ/mol
Flash Point: 213.6 °C
Vapor Pressure: 1.03E-09 mmHg at 25°C
Solubility: not soluble in water
Classification Code: Mutation data; Tumor data
Stability: Explosive combination can occur with strong oxidizing agents, metal salts, peroxides and sulfides
 The molecular structure of Sudan II (CAS NO.3118-97-6) is .

Uses

 Sudan II (CAS NO.3118-97-6) is a lysochrome (fat-soluble dye) azo dye used for staining of triglycerides in frozen sections, and some protein bound lipids and lipoproteins on paraffin sections. In industry, it is used to color nonpolar substances like oils, fats, waxes, greases, various hydrocarbon products, and acrylic emulsions.

Toxicity Data With Reference

1.    

mma-sat 50 µg/plate

    MUREAV    Mutation Research. 44 (1977),9.

Consensus Reports

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 8 ,1975,p. 233.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory. Community Right-To-Know List. EPA Genetic Toxicology Program.

Safety Profile

Questionable carcinogen with experimental carcinogenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
Hazard Symbols:  Xi
Risk Statements:36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin 
Safety Statements:26-37/39
S37/39: Wear suitable gloves and eye/face protection 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice

Specification

  Sudan II (CAS NO.3118-97-6), its Synonyms are C.I. Solvent Orange 7 ; Sudan red ; 1-((2,4-Dimethylphenyl)azo)-2-naphthalenol ; 1-(2,4-Xylylazo)-2-naphthol ; 1-(o-Xylylazo)-2-naphthol ; 1-Xylylazo-2-naphthol ; 2-Naphthalenol, 1-((2,4-dimethylphenyl)azo)- ; 2-Naphthol, 1-(2,4-xylylazo)- ; A F Red No. 5 ; A.F. Red No. 5 ; Waxakol vermilion ; Waxakol vermilion L . It is red to orange-brownish powder.