CAS No.:497-19-8. Purity:99.2%. Molecular Fomular:Na2CO3. Molecular weight:105.99. Index Name High Grade First Class Sdandard Total Alkalinty(as Na2CO3 %) 99.2 98.8 98.0 Chloride (as NaCl) 0.7 0.9 98.0 Iron (Fe) 0.004 0.008 0.010 Water insoluble 0.004 0.10 0.15 Loss on ignition 0.8 1.0 1.3 Properties & Application : White crystal and hygroscopic powder. It is easily soluble in the glass, silicate, detergent, pharmaceutical and chemical industries. Appearance:White crystal and hygroscopic powder. Pakaging Detail:Packed in 25 kg/50kg/1000kg plastic woven bag with polyethlene liner. Delivery Datail:Within 30 days. Storage:Transport and store in dry conditions.