Sulfonic Acid "Soft Type" is an anionic active anionic cleaner, which is a brown viscous liquid, with the ability to clean and fumigate and remove stains in the formulation of powder detergents and a variety of cleaners. And is among the most expensive in the row with other surfactants. In formulation, it is compatible with anionic, non-anionic and amphoteric surfactants and is very important for environmental degradability.