ChemicalBook--->CAS DataBase List--->131-79-3

131-79-3

131-79-3 Structure

131-79-3 Structure
IdentificationBack Directory
[Name]

OIL YELLOW OB
[CAS]

131-79-3
[Synonyms]

KI405
jauneob
CI 11390
NSC11234
NSC-11234
YELLOW OB
NSC 11234
fd&cyellow4
FD&CYELLOWOB
FD&CYELLOWNO4
OIL YELLOW OB
zlutmaselnaob
SOLVENTYELLOW6
a.f.yellowno.3
C Yellow No. 4
cerisolyellowtb
dolkwalyellowob
oilyellowobpure
fdandcyellowno.4
c.i.foodyellow11
c.i.solventyellow6
extdandcyellowno.10
zlutrozpoustedlova6
O-TOLUENEAZO-2-NAPHTHYLAMINE
1-(o-tolylazo)-2-naphthylamin
1-(o-tolylazo)-2-naphthylamine
C.I.Solvent Yellow 6:C.I.11390
o-toluene-1-azo-2-naphthylamine
1-(2-o-tolylazo)-2-naphthylamine
1-(ORTHO-TOLYLAZO)-2-NAPHTHYLAMINE
1-(2-methylphenyl)azo-2-naphthylamine
C. I. Solvent Yellow 6 (Oil Yellow OB)
1-(2-methylphenyl)azo-2-naphthalenamine
1-((2-methylphenyl)azo)-2-naphthalenamine
1-[(2-methylphenyl)azo]naphthalen-2-amine
(E)-1-(o-Tolyldiazenyl)naphthalen-2-amine
2-Naphthalenamine, 1-(2-methylphenyl)azo-
1-(2-methylphenyl)diazenylnaphthalen-2-amine
2-Naphthalenamine, 1-[2-(2-methylphenyl)diazenyl]-
[EINECS(EC#)]

205-039-9
[Molecular Formula]

C17H15N3
[MDL Number]

MFCD00046381
[MOL File]

131-79-3.mol
[Molecular Weight]

261.32
Chemical PropertiesBack Directory
[Melting point ]

125-126° (Fischer)
[Boiling point ]

394.58°C (rough estimate)
[density ]

1.1394 (rough estimate)
[refractive index ]

1.6360 (estimate)
[IARC]

3 (Vol. 8, Sup 7) 1987
[EPA Substance Registry System]

C.I. Solvent Yellow 6 (131-79-3)
Hazard InformationBack Directory
[Chemical Properties]

Orange or yellow powder. Insoluble in water; soluble in alcohol and oils.
[Uses]

Biological stain.
[Hazard]

Consult regulations before using in food products. Questionable carcinogen.
[Definition]

ChEBI: Yellow OB is a member of azobenzenes.
[Preparation]

O-Methylaniline diazotization, and Naphthalen-2-amine coupling.
[Properties and Applications]

red light yellow to orange (in mineral oil). Soluble in ethanol and Toluene, insoluble in water. In the crystallization of from ethanol to get is a deep red, melting point is 126 ℃. In concentrated sulfuric acid to red light purple, after diluted solution for red, orange brown precipitation. Dye alcohol solution to join hydrochloric acid solution more red; Sodium hydroxide and the same color.
Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Good 126 70 Insoluble Well Well
Safety DataBack Directory
[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 p-naphthylamine. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also AROMATIC AMINES.
[Hazardous Substances Data]

131-79-3(Hazardous Substances Data)
[Toxicity]

LD50 oral in rat: 120mg/kg
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