HO4S2 * is a chemical compound registered under CAS number 13036-75-4, with the molecular formula F2O5 S2 and a molecular weight of about 129.14 g/mol. Its EINECS (EC) number is 235-903-0. It is also known as Pyrosulfurylfluoride (6CI,7CI,8CI); Fluorosulfonic anhydride; Fluorsulfonic acid anhydride. NewsChem supplies HO4S2 * for laboratory research and bulk production; product code 1130148. Send an inquiry for purity, packaging, price and lead time.