Soda Ash Medium
Chemical formula: Na2CO3
O
| |
Structural formula: Na --
O -- C -- O -- Na
Common names: Sodium
carbonate, calcined soda, disodium carbonate
CAS registry number:
497-19-8
Physical and chemical properties
Soda Ash Medium is a white, odourless, uniform product, free from dirt and other foreign matter. Soda ash has a tendency to absorb moisture from the atmosphere. The moist soda ash then starts absorbing atmospheric carbon dioxide. This phenomenon of absorption of moisture and carbon dioxide by soda ash is known as weathering. After weathering, soda ash is likely to contain appreciable moisture and sodium bicarbonate, but the total alkali content of the bag does not change. Soda ash has a tendency to cake when it comes in contact with moisture and, consequently, becomes lumpy.
| Characteristics | Units | IS 251 : 1998 specifications |
TCL-assured specifications |
|---|---|---|---|
| Molecular weight | 106 | ||
| Bulk density | Kg/m3 | 751 - 950 | 751 - 950 |
| Volatile matter content (at the time of packing) | %, max | 2 | 0.80 |
| Total alkalinity (as Na2CO3 ) | %, min | 98.5 | 99.0 |
| Sulphates (as Na2SO4) | %, max | 0.08 | 0.03 |
| Chlorides (as NaCl) | %, max | 1.0 | 0.80 |
|
Iron (as Fe2O3) => By colorimetric method By spectrophotometric method |
%, max |
0.007 |
0.0029 0.002 |
| Matter insoluble in water | %, max | 0.15 | 0.03 |
Applications :
Soda Ash Medium is one of the basic industrial chemicals and thus finds use in glass, silicate, bichromate and other industries.
Packaging
Available in 50 kg HDPE / PP bags with lamination.
Storage
Soda Ash Medium should be stored under cover in a cool, dry place and the bags should not be stacked more than 15 bags high.