Sodium nitrate is 1.used in azodyestuff,bleaching agent, 2.metal heat ... property.Uses: it ismostly used in manufacturing nitro-compound, Potassium nitrate , azodyestuff, dye mordant in textile coloration, bleaching agent, metalheat treatment ... matter: 0.06% Max.Sodium Nitrite (NaNO2): 0.02% max.Chloride (As Cl): 0.3% Max.Carbonate (As Na2CO3): 0.1 ...