... ( Na2CO3),%≥99.298.998.0chloride ( NaCL ),%≤0.500.901.20Iron (Fe) ,%≤0.0040.0060.010sulfate (SO4)%≤0.03--water-insoluable ,%≤0 ... ),%≥99.298.998.0chloride ( Na CL ),%≤0.500.901.20Iron (Fe) ,%≤0.0040.0060.010sulfate (SO4 )%≤0.03--water-insoluable ,%≤0 ...