Sodium Carbonate in White Powder Form is a kind of sodium salt of carbonic acid and is used as a water softener. Sodium Carbonate is synthetically produced in large quantities from salt [sodium chloride] and limestone. Sodium Carbonate most commonly occurs as a crystalline heptahydrate, which readily efflorescence to form a white powder, the monohydrate. Sodium Carbonate in White Powder Form is hygienically processed to ensure safety of usage.