Easily soluble in water showing neutrality It can be dissolved in glycerin ITEMSINDEXGeneral gradeNeutral GradeNa2so4 %≥ 99 99 Insolubles in Water,%≤ 0.05 0.05 Ca+Mg(As Mg),%≤ 0.15 0.15 Cl,%≤ 0.35 0.35 Fe,%≤ 0.002 0.002 Moisture,%≤ 0.2 0.2 Whiteness,%≥ 80 80 PH(1% Solutun) 8-11 6-8