👉 Sulphoindigotate is a chemical compound that consists of sulfur and indigo. It is a type of dye commonly used in textile and paper production, as well as in photography and printing processes. The chemical formula for sulphoindigotate is SO2H3O2, where H represents hydrogen, O represents oxygen, and the element at the left side of the arrow (in this case, sulfur) is represented by S. Sulphoindigotate has a