7646-93-7 7778-80-5 AI3-04459 Acid potassium sulfate Caswell No. 682C EINECS 231-594-1 EPA Pesticide Chemical Code 005605 Monopotassium hydrogen sulfate Monopotassium sulfate NSC 409996 Potassium acid sulfate Potassium bisulfate Potassium bisulphate Potassium hydrogen sulfate Potassium hydrogen sulfate [UN2509] [Corrosive] Potassium hydrogen sulfate, solid Potassium hydrogensulphate Potassium hydrosulfate (KHSO4) Potassium sulfate Potassium sulfate (KHSO4) Sal enixum Sulfuric acid potassium salt (1:1) Sulfuric acid, monopotassium salt UN2509