| Identification | Back Directory | [Name]
4-(phenylazo)-o-cresol | [CAS]
621-66-9 | [Synonyms]
C.I.11840
Oil Yellow WP
Solvent Yellow 10
C.I.Solvent Yellow 10
4-(phenylazo)-o-cresol
2-Methyl-4-(phenylazo)phenol
C.I.Solvent Yellow 10:C.I.11840
Phenol, 2-methyl-4-(2-phenyldiazenyl)- | [EINECS(EC#)]
210-699-6 | [Molecular Formula]
C13H12N2O | [MOL File]
621-66-9.mol | [Molecular Weight]
212.25 |
| Hazard Information | Back Directory | [Preparation]
aniline diazotization, and o-Cresol coupling. | [Properties and Applications]
green light yellow to red yellow. Soluble in hot water for red light yellow, soluble in ethanol for green yellow. In ethanol from out of the crystallization product melting point is 126 ~ 128 ℃. In concentrated sulfuric acid for yellow brown, dilution after brick red solution; In hot concentrated hydrochloric acid in orange brown precipitation; In the heat of 2% sodium hydroxide solution for yellow orange. Used for oil, paraffin wax, cellulose paint 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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General
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126～128
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70≥170
Sublimation
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Well
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Well
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Well
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| [Purification Methods]
Crystallise the phenol from hexane or pet ether (m 130o). [Beilstein 16 II 59, 16 III 104, 16 IV 193.] |
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