Question

what is a dying vat​

Answer 1

Answer:

Vat dyes are a class of dyes that are classified as such because of the method by which they are applied. Vat dyeing is a process that refers to dyeing that takes place in a bucket or vat. The original vat dye is indigo, once obtained from plants but now produced synthetically.

Answer 2

Answer:

Vat Dye is a water-insoluble dye, usually containing keto groups which is normally applied to the fiber from an alkaline aqueous solution of the reduced enol (leuco) form, and which is subsequently oxidized in the fiber to the insoluble form making it the most long-lasting dye.