Na2CO3: 99.2% min.

Chlorides(NaCl): 0.70% max.

Sulphate(SO4): 0.03% max.

 Iron(Fe2O3): 0.0035% max.

Water insoluble matter:0.03% max.

 Ignition loss: 0.80% max.

 Bulk density: 0.90G/ML min

 Particle size 180um sieve remaining 70% min