Soda Ash Dense Formula
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
The synthetic soda ash is produced using the ammonia-soda process, popularly known as the solvay process. Common salt and limestone are the raw materials processed and converted into soda ash and calcium chloride.
Physical and chemical properties
Soda Ash Dense is a white, odourless and 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 is known as weathering. After weathering, soda ash is likely to contain appreciable moisture and sodium bicarbonate, though its total alkali content does not change. Soda ash has a tendency to cake when it comes into contact with moisture and, consequently, becomes lumpy.
| Characteristics | IS 251 : 1998 specifications |
TCL-assured specifications |
Units |
|---|---|---|---|
| Molecular weight | 106 | ||
| Bulk density | 951 – 1250 | 1000 - 1200 | Kg/m3 |
| Volatile matter content (at the time of packing) | 2 | 0.80 | %, max |
| Total alkalinity (as Na2CO3 ) | 98.5 | 99.0 | %, min |
| Sulphates (as Na2SO4) | 0.08 | 0.03 | %, max |
| Chlorides (as NaCl) | 1.0 | 0.80 | %, max |
|
Iron (as Fe2O3) => By colorimetric method By spectrophotometric method |
0.007 |
0.0029 0.002 |
%, max %, max %, max |
| Matter insoluble in water | 0.15 | 0.03 | |
| Sieve analysis (BSS): | |||
| Mesh - Microns | |||
| +10 - +1680 | 1.0 | 1.0 | %, max |
| -200 - -75 | 15.0 | 5.0 | %, max |
Applications :
Soda Ash Dense is an important industrial chemical and is used in the manufacture of glass, silicates, ultramarine, bichromates and other industries.
Packaging
Available in 50-kg HDPE / PP bags and 1-MT PP jumbo bags with lamination / liner.
Storage
Soda Ash Dense should be stored under cover in a cool, dry place; the bags should not be stacked more than 15 bags high.