What is is iron iii sulfide soluble?

Iron III sulfide (Fe2S3) is insoluble in water and most organic solvents due to its high molecular weight and ionic nature. It will only dissolve in acidic solutions, where it forms ferrous ions (Fe2+) and sulfur hydrogen ions (H2S). The solubility of iron III sulfide increases slightly in acidic solutions with increasing temperature, but it remains mostly insoluble under normal conditions. Iron III sulfide is commonly used in pigments, as a catalyst in chemical reactions, and in the production of batteries.