Quick Details Classification:Potassium Fertilizer Type:Potassium Sulphate CAS No.:7778-80-5 Other Names:potassium sulfate/SOP MF:K2SO4 EINECS No.:231-915-5 Release Type:Quick State:Powder Purity:50%-52% Application:Agriculture ; Industry Brand Name:x-humate Relative density:2.109 Melting Point:83â?? Applicationï¼? 1.Used as potassium fertilizer in agriculture 2.Mainly used as the raw material of BLENDING NPK 3.Used as settling agent in glass industry 4.Used as intermediate in dyeing industry 5.Used for producing potassium sale, potassium carbonate, potassium persulphate