Deep White SI Liquid is an organosulfur compound which is a simple aromatic sulfonic acid having a chemical formula C6H6O3S with a molar mass of 158.17 grams per mol. It can be used as an active ingredient in fabric to wash clothes in washing machines. This compound is soluble in water and solvents like alcohol but insoluble in non-polar solvents. It can also be used to convert to other specialty chemicals and as a polymer remover stripping agent in diluted form.