7783-05-3 7790-62-7 Dipotassium disulfate Dipotassium disulphate Dipotassium pyrosulfate Disulfuric acid, dipotassium salt EINECS 232-216-8 Potassium disulfate (K2S2O7) Potassium pyrosulfate Potassium pyrosulfate (K2S2O7) Potassium sulfate (K2S2O7) Pyrosulfuric acid, dipotassium salt