Soda ash description :

Sodium Carbonate:

CAS No:  497-19-8
EINECS No. 207-838-8
Molecular formula: Na2CO3
Molecular weight: 105.98

Property:
white crystalline granules, easily soluble in water, can easily absorb moisture and carbon dioxide when exposed to the air.

Sodium carbonate (light):
Total alkali content: -----------------------------99.2%min
Chlorides (NaCl): --------------------------------0.7%max
Sulphate (SO4): ----------------------------------0.03%max
Iron (Fe2O3):--------------------------------------0.04%max
Water insoluble matter: --------------------------0.04%max
Ignition loss: --------------------------------------0.80%max

Sodium carbonate (Dense):
Total alkali content: -----------------------------99.2%min
Chlorides (NaCl): --------------------------------0.7%max
Sulphate (SO4): ----------------------------------0.03%max
Iron (Fe2O3):--------------------------------------0.04%max
Water insoluble matter: --------------------------0.04%max
Ignition loss: --------------------------------------0.80%max
Bulk Density: --------------------------------------0.9g/ml min
Particle Size: -------------------------------------- 180um Sieve

Usage:
widely used in manufacture of chemicals and metallurgy, medicine,petroleum, textile, printing and dyeing, foodstuff, glass, enamel, water treatment.