CAS:1324-11-4
Molecular formula:C24H10Br2O2
Molecular weight:490.143
Properties: Yellowish brown powder. Soluble in nitrobenzene, xylene and tetrahydronaphthalene, slightly soluble in ethanol, acetone, benzene, pyridine, toluene and o-chlorophenol. It is blue purple in concentrated nitric acid and orange after dilution. It is jujube red in alkaline sodium bicarbonate reducing solution.
Application: VAT Orange 1 is mainly used for dyeing and printing of cotton, viscose fiber, silk, polyester, Uygur cotton and polyester cotton. Due to its serious light brittleness, it is mostly used for color matching and in the manufacture of organic pigments.
Structure: