#	Criteria	Specification
1	Molecular Weight	84
2	Total Alkalinity as Na2CO3 (Min)	99.3 to 101.5%
3	PH of 1% Solution (Max)	8.2 to 8.5
4	Chloride as Cl. Percent by mass (max)	0.01 to 0.02%
5	Insoluble matters percent	0.01% to 0.05%
6	Sulphate as SO4 percent	Traces
7	Iron as Fe percent by mass (max)	0.001% to 0.002%
8	Heavy metals Pb ppm (Max)	Traces
9	Arsenic as As ppm (Max)	Traces
10	Copper as Cu ppm (Max)	Traces
11	Description	White Uniform crystaline material free from dust and other foreign matter