Soda Ash Dense

Soda Ash Dense Formula

Chemical formula: Na2CO3

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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
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
By spectrophotometric method


%, 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.


Available in 50-kg HDPE / PP bags and 1-MT PP jumbo bags with lamination / liner.


Soda Ash Dense should be stored under cover in a cool, dry place; the bags should not be stacked more than 15 bags high.