Soda ash light Item Specification Na2co399.2%min Chloride 0.70%max Iron content 0.004%max Water insoluble matter0.08%max Loss on igniton0.8%max Soda ash dense Item Specification Na2co399.2%min Chloride content 0.70%max Iron content 0.0035%max Water insoluble matter 0.03%max Bulk density (g/ml) 0.9%max. 20 40 50 kg bag or jumbo bag.