Vat Blue 4 also named vat blue RSN is a kind of vat dyes. It’s mainly used for dyeing synthetic silk, cotton fibers, and polyester cotton blended fabrics.

In addition, vat blue 4 is also used for dyeing and printing of vinylon, viscose fibers, and their textiles.

The specific uses of Vat blue 4 include:

Artificial silk dyeing: V at Blue 4 can be used as an artificial silk dyeing agent to provide stable dyeing results.

Cotton fiber dyeing: It is widely used for dyeing cotton fibers, including yarn, cotton fabric dyeing, and printing.

Dyeing of polyester cotton blended fabric: In the dyeing of polyester cotton blended fabric, vat blue 4 shows good dyeing effect.

Dyeing of Vinylon, Viscose Fiber and Their Fabrics: Vat Blue 4 is also used for dyeing and printing of Vinylon, Viscose Fiber and their fabrics, with excellent color fastness.