Total Alkalinity as Na2CO3 (Min) 99.3 to 101.5%of 1% Solution (Max) 8.2 to 8.5Chloride as Cl. Percent by mass (max) 0.01 to 0.02%Insoluble matters percent 0.01% to 0.05%Sulte as SO4 percent TracesIron as Fe percent by mass (max) 0.001% to 0.002%Sodium bicarbonate is a white, crystaler that is commonly used as a buffering agent, an electrolyte replenisher, systemic alkalizer and in topical cleansing solutions.Sodium Bicarbonate is the monosodium salt of carbonic acid with alkalinizing and electrolyte replacement properties.