Serial No.	Parameters	Specification Limits
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1	Description	Soda Ash is a white, uniform product, free from dirt and other foreign matter.
2	Chemical Name	Sodium Carbonate
3	Bulk Density	500-650 kg/m3
5	Volatile matter Content	2% max. at the time of manufacture and packing
6	Chemical Formula	Na2Co3
7	Molecular weight	106
8	Specification No. IS:251:1982 (% by mass)	ISI Specification     Typical Specification
9	Total Alkalinity as Na2Co3 (min)	98.5 (min)                   99.00%
10	Chlorides as NaCl (max)	10.0(max)                    0.4 to 0.6%
11	Sulphates as Na2SO4 (max)	0.08 (max)                    0.02%
12	Matter insoluble in water (max)	0.15 (max)                    0.03%
13	Iron as Fe2O3	0.007 (max)                   0.002%