Used in alkaline batteries industry, soaps, high-class detergents and cosmetic, medicine intermediate, potassium chemical,etc. Item UNITSTANDARDKOH% MIN90K2CO3% MAX0.5CLORIDE(CL)% MAX0.005Fe% MAX0.0005Sulfate(SO42-)% MAX0.005Nitrate&Nitrite(N)% MAX0.0005Na% MAX0.8Phosphate(PO4)% MAX0.005Silica(SiO3)% MAX0.01Al% MAX0.002Ca% MAX0.005Ni% MAX0.0005Heavy Metal(Pb)% MAX0.002