OIL YELLOW OB
- CAS NO.：131-79-3
- Empirical Formula: C17H15N3
- Molecular Weight: 261.32
- MDL number: MFCD00046381
- EINECS: 205-039-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-10 10:27:33
What is OIL YELLOW OB?
Chemical properties
Orange or yellow powder. Insoluble in water; soluble in alcohol and oils.
The Uses of OIL YELLOW OB
Biological stain.
Preparation
O-Methylaniline diazotization, and Naphthalen-2-amine coupling.
Definition
ChEBI: Yellow OB is a member of azobenzenes.
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 |
Properties of OIL YELLOW OB
| 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 for OIL YELLOW OB
Computed Descriptors for OIL YELLOW OB
New Products
Pentadecanoic acid 3-Bromophenylacetic acid 3-AMINO-3-(2-FLUORO-PHENYL)-PROPIONIC ACID Hendecanoic acid 2-Bromo-5-cyanopyridine 2-Amino-5-cyanopyridine 4-(4-(Dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl)-3-(hydroxymethyl)benzonitrile 5-Bromo-4-chloro-3-indolyl-β-D-galactopyranoside 3′-Hydroxyacetophenone 5-fluoro-1,3-benzodioxole Tetracaine Hydrochloride Ep Grade 2,2,2-Trichloroethyl chloroformate 2-Bromo-6-fluoroaniline 2-Amino-4-phenyl-thiazole N-(4-Bromophenyl)-2-chloroacetamide 1-(3-Hydroxyphenyl)-2-thiourea 4-Nitrobenzenesulfonohydrazide 2-Aminobenzo[d]thiazol-4-ol 4-Chloro-2-methyl quinoline (4-Fluorobenzofuran-2-yl)boronic acid methyl 2-fluoro-4-((1-methoxy-2-methyl-1-oxopropan-2-yl)amino)benzoate Nifedipine D6 2-chloro-3,5-dinitropyridine 2H-indol-2-one, 5-amino-1,3-dihydro-1-(1-methylethyl)-Related products of tetrahydrofuran
![2,2'-[(Azobenzene-4-yl)imino]diethanol](https://img.chemicalbook.in/CAS/GIF/2452-84-8.gif)
![2,4-dihydro-4-[(2-methoxyphenyl)azo]-5-methyl-2-phenyl-3H-Pyrazol-3-one](https://img.chemicalbook.in/CAS/GIF/4645-07-2.gif)
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