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| | 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 | | Product Categories: | | | 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) | | Henry's Law Constant | 1.8×104 mol/(m3Pa) at 25℃, HSDB (2015) | | IARC | 3 (Vol. 8, Sup 7) 1987 | | EPA Substance Registry System | C.I. Solvent Yellow 6 (131-79-3) |
| | 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.
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Standard
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Light Fastness
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Heat-resistant(℃)
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water
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Sodium Carbonate(5%)
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Hydrochloric acid(5%)
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Melting point
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Stable
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ISO
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Good
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126
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70
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Insoluble
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Well
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Well
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| | OIL YELLOW OB Preparation Products And Raw materials |
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