Product Name

  • Name

    OIL YELLOW OB

  • EINECS
  • CAS No. 131-79-3
  • Article Data4
  • CAS DataBase
  • Density 1.15g/cm3
  • Solubility
  • Melting Point 125-126° (Fischer)
  • Formula C17H15 N3
  • Boiling Point 478.7°Cat760mmHg
  • Molecular Weight 261.326
  • Flash Point 243.3°C
  • Transport Information
  • Appearance
  • Safety A poison by ingestion. Moderately toxic by intraperitoneal and subcutaneous routes. Questionable carcinogen with experimental tumorigenic data. May be contaminated with the carcinogen β-naphthylamine. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also AROMATIC AMINES.
  • Risk Codes
  • Molecular Structure Molecular Structure of 131-79-3 (OIL YELLOW OB)
  • Hazard Symbols Consult regulations before using in food products.
  • Synonyms 2-Naphthalenamine,1-[(2-methylphenyl)azo]- (9CI); 2-Naphthylamine, 1-o-tolylazo- (6CI); C.I.Solvent Yellow 6 (7CI,8CI); 1-(o-Tolylazo)-2-naphthylamine; A.F. Yellow No.3;C.I. 11390; C.I. Food Yellow 11; Cerisol Yellow TB; Dolkwal Yellow OB; Ext. Dand C Yellow No. 10; FD and C Yellow No. 4; Japan Yellow 405; NSC 11234; OilYellow OB; Oil Yellow OB Pure; Yellow 405; Yellow OB;o-(2-Amino-1-naphthylazo)toluene; o-Toluene-1-azo-2-naphthylamine
  • PSA 50.74000
  • LogP 5.72700

FD&C YELLOW No. 4 Chemical Properties

Chemical Name: Oil yellow OB
IUPAC NAME: 1-(2-Methylphenyl)diazenylnaphthalen-2-amine
CAS No.: 131-79-3
EINECS: 205-039-9
Molecular Formula: C17H15N3
Molecular Weight: 261.32 g/mol
Following is the structure of FD&C YELLOW No. 4 (CAS No.:131-79-3):


The chemical synonymous of FD&C YELLOW No. 4 (CAS No.:131-79-3) are 1-((2-Methylphenyl)azo)-2-naphthalenamine ; 1-(2-o-Tolylazo)-2-naphthylamine ; 1-(o-Tolylazo)-2-naphthylamin ; 1-(o-Tolylazo)-2-naphthylamine

FD&C YELLOW No. 4 Toxicity Data With Reference

1.    

mma-sat 50 µg/plate

     CANCAR    Cancer. 49 (1982),1970.
2.    

orl-rat LD50:120 mg/kg

     85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum1986,1315.
3.    

orl-mus LDLo:1 g/kg

     85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum1986,1315.
4.    

orl-rbt LDLo:1 g/kg

     JBCHA3    Journal of Biological Chemistry. 27 (1916),403.
5.    

ipr-rbt LDLo:1 g/kg

     JBCHA3    Journal of Biological Chemistry. 27 (1916),403.
6.    

scu-rbt LDLo:1 g/kg

     JBCHA3    Journal of Biological Chemistry. 27 (1916),403.

FD&C YELLOW No. 4 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. 287.(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) . EPA Genetic Toxicology Program.

FD&C YELLOW No. 4 Safety Profile

A poison by ingestion. Moderately toxic by intraperitoneal and subcutaneous routes. Questionable carcinogen with experimental tumorigenic data. May be contaminated with the carcinogen β-naphthylamine. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also AROMATIC AMINES.

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