OIL YELLOW OB
OIL YELLOW OB Basic information
- Product Name:
- OIL YELLOW OB
- Synonyms:
-
- 1-((2-methylphenyl)azo)-2-naphthalenamine
- 1-(2-methylphenyl)azo-2-naphthalenamine
- 1-(2-methylphenyl)azo-2-naphthylamine
- 1-(2-o-tolylazo)-2-naphthylamine
- 1-(o-tolylazo)-2-naphthylamin
- 1-(o-tolylazo)-2-naphthylamine
- CI 11390
- 1-[(2-methylphenyl)azo]naphthalen-2-amine
- CAS:
- 131-79-3
- MF:
- C17H15N3
- MW:
- 261.32
- EINECS:
- 205-039-9
- Mol File:
- 131-79-3.mol
OIL YELLOW OB Chemical Properties
- 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)
Safety Information
- Hazardous Substances Data
- 131-79-3(Hazardous Substances Data)
- Toxicity
- LD50 oral in rat: 120mg/kg
OIL YELLOW OB Usage And Synthesis
Chemical Properties
Orange or yellow powder. Insoluble in water; soluble in alcohol and oils.
Uses
Biological stain.
Definition
ChEBI: Yellow OB is a member of azobenzenes.
Preparation
O-Methylaniline diazotization, and Naphthalen-2-amine coupling.
Hazard
Consult regulations before using in food products. Questionable carcinogen.
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.
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 |
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OIL YELLOW OB(131-79-3)Related Product Information
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- Tartrazine
- Solvent Yellow 51
- Solvent Yellow 56
- 1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-N-tridecylnaphthalen-2-amine
- OIL YELLOW OB
- sodium 6-amino-4-hydroxy-5-[[2-(trifluoromethyl)phenyl]azo]naphthalene-2-sulphonate
- ROSAZURIN B
- ACID RED 266
- DIRECT BLACK 91