Vat Red 42 Chemical Properties

Melting point:

286.5 °C

Boiling point:

549.5±50.0 °C(Predicted)

Density 

1.409±0.06 g/cm3(Predicted)

pka

11.66±0.20(Predicted)

Vat Red 42 Usage And Synthesis

Preparation

(a) 1,4-Diaminoanthraquinone and Benzoyl chloride condensation; (b) 1, 4 – Dichloroanthraquinone and Benzamide?(2 Moore) condensation.

Properties and Applications

yellow red. Dark red powder. Soluble in 1, 2, 3, 4 – Tetrahydronaphthalene and Xylene. In concentrated sulfuric acid for red, dilution after magenta precipitation; Alkaline reduction leuco for dark red light purple; Acid reduction leuco for yellow brown. This product is light brittle dye, with photosensitivity. Mainly used in color matching, dyeing cotton shoulds not be direct sunlight, or color shallow. Can be used for paper dyeing.

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