Vat Green 1, Solubilised

Preparation

(a) in the presence of Pyridine , with Chlorosulfonic acid treatment ?C.I. Vat Green 1 leuco; (b) in the Pyridine with metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate, etc.) processing ?C.I. Vat Green 1. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.

Properties and Applications

brilliant green. Red brown powder. Soluble in water and Acetone, slightly soluble in Etanol. In concentrated sulfuric acid to dark brown, after diluted into red. Oxidation rate of medium, easy to color. Mainly used for cotton fabric dyeing and printing, also can be used for wool, silk and polyester/cotton blended fabric dyeing and printing. Can direct printing and resist printing, also can undertake jig dyeing and pad dyeing.