5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid

CAS No.
3267-41-2
Chemical Name:
5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid
Synonyms
C.I.43860;Diamond Violet B;Mordant Violet 27;C.I.Mordant Violet 27;C.I.Mordant Violet 27:C.I.43860;5-[bis(3-carboxy-4-hydroxy-5-methylphenyl)methylidene]-3-methyl-6-oxocyclohexa-1,3-diene-1-carboxylic acid;5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid;Benzoic acid, 3-[(3-carboxy-4-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-5-methyl-
CBNumber:
CB42220941
Molecular Formula:
C25H20O9
Molecular Weight:
464.42
MDL Number:
MOL File:
3267-41-2.mol

5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid Properties

Boiling point 749.8±60.0 °C(Predicted)
Density 1.515±0.06 g/cm3(Predicted)
pka 1.82±0.20(Predicted)

5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid Chemical Properties,Uses,Production

Preparation

Formaldehyde (1 Moore) and 2-Hydroxy-3-methylbenzoic acid (2 Moore) condensation, its product in Nitrosylsulfuric acid with 5-Methylsalicylic acid common oxidation.

Properties and Applications

purple. Soluble in water for olive, soluble in ethanol for red purple. In concentrated sulfuric acid for red orange, after dilution is purple. Dye aqueous solution to join sodium hydroxide as magenta to purple, and precipitation.

Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water
Alkali Acid
ISO 5 4 4 4 4-5 4 5

5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

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5-[(3-Carboxy-2-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-3-methylbenzoic acid C.I.43860 C.I.Mordant Violet 27 Diamond Violet B 5-[bis(3-carboxy-4-hydroxy-5-methylphenyl)methylidene]-3-methyl-6-oxocyclohexa-1,3-diene-1-carboxylic acid Benzoic acid, 3-[(3-carboxy-4-hydroxy-5-methylphenyl)(3-carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxy-5-methyl- C.I.Mordant Violet 27:C.I.43860 Mordant Violet 27 3267-41-2