Phosphorotetraselenoic acid (9CI) is a chemical compound registered under CAS number 54576-47-5, with the molecular formula H3PSe4 and a molecular weight of about 349.88 g/mol. ChemIBD supplies Phosphorotetraselenoic acid (9CI) for laboratory research and bulk production; product code 867293. Send an inquiry for purity, packaging, price and lead time.