Properties of Soda Ash Light:
Production of Soda Ash Light:
Trona, trisodium hydrogendicarbonate dihydrate (Na3HCO3CO3·2H2O) is mined in several areas and provides all the domestic consumption of sodium carbonate.
Leblanc process is used for producing sodium carbonate from salt, sulphuric, limestone, and coal. Sea salt is boiled in sulphuric acid to yield sodium sulphate and hydrogen chloride gas. Sodium sulphate is blended with crushed limestone (calcium carbonate) and coal for producing soda ash in small scale production.
2 NaCl + H2SO4 → Na2SO4 + 2 HCl
Na2SO4 + CaCO3 + 2 C → Na2CO3 + 2 CO2 + CaS
In 1861, the Belgian industrial chemist Ernest Solvay patented a method to convert sodium chloride to sodium carbonate using ammonia. Solvay process is a most economically dominative process than Leblanc process and approximately 90% of sodium carbonate is commercially produced by the Solvay process.
CaCO3 → CaO + CO2
NaCl + NH3 + CO2 + H2O → NaHCO3 + NH4Cl
2 NaHCO3 → Na2CO3 + H2O + CO2
In 1930, the Chinese chemist Hou Debang developed a Hou’s process used steam reforming byproduct carbon dioxide is pumped through a saturated solution of sodium chloride and ammonia to produce sodium bicarbonate. Sodium bicarbonate is collected and then heated to yield high purity sodium carbonate like Solvay process.
NH3 + CO2 + H2O → NH4HCO3
NH4HCO3 + NaCl → NH4Cl + NaHCO3
Soap and Detergent Industry
Soda ash Light is an important ingredient in soaps and detergents because it functions as a builder in the formulation of the soap or detergent, to achieve the desired level of soil removal. It is also beneficial as an agglomerating aid, as it acts as the carrier for surfactants and is also the source of alkalinity for pH adjustment.
Light soda ash is used in the production of many chemicals. It is a source of sodium ions in the production of sodium phosphates, sodium carbonate, sodium silicates, chrome chemicals and photographic chemicals.
Soda Ash Light is widely used in the food industry as an acidity regulator, anti-caking agent and as a stabilizer.
Soda Ash is used as an electrolyte as it a good conductor and hence can be used in electrolysis. It is also used in small scale dyeing industries. It ensures chemical bonding of the dye to the cellulose fibres.
|Mol Wt. :||105.989|
|Synonyms :||Sodium Carbonate, Soda Ash|
|PHYSICAL AND CHEMICAL PROPERTIES|
|Physical State:||White, granular, Odourless|
|Solubility in water :||Soluble, 7 g in 100 g of H2O|
|Density and phase :||500 kg/m3, solid|
|Na2CO3, % by wt :||Min. 99.2|
|NaCl, % by wt :||Max. 0.2|
|NaSO4, % by wt :||Max. 0.2|
|Fe2O3, % by wt :||Max. 0.003|
|Water insoluble, % by wt :||Max. 0.04|