The molecular weight of the physical nature of the amino sulfonic acid 97.09 m.p. ° C 205 amino sulfonic acid and its salts with a variety of metal compounds can generate soluble salts dissolved in water and the height is not precipitated on the corrosion of the metal of small features, as a cleaning agent generated in the course of removal of iron, steel, copper, stainless steel, lead, ceramic manufacturing machinery, equipment rust and scale. The amino acid as a cleaning agent, because it is a solid with a storage, transportation convenient, easy to prepare and many other advantages, especially for long-haul use.