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Soda Ash (Inorganic Chemical) - Manufacturers, Suppliers and Exporters

Sodium carbonate (also known as washing soda or soda ash), Na2CO3 is a sodium salt of carbonic acid. It most commonly occurs as a crystalline heptahydrate, which readily effloresces to form a white powder, the monohydrate. Sodium carbonate is domestically well known for its everyday use as a water softener. It has a cooling alkaline taste, and can be extracted from the ashes of many plants. It is synthetically produced in large quantities from table salt and limestone in a process known as the Solvay process.

Properties :

  • Molecular formula : Na2CO3
  • Molar mass : 105.9884 g/mol (anhydrous)124.00 g/mol (monohydrate)286.14 g/mol (decahydrate)
  • Appearance: White solid, hygroscopic Odor Odorless Density 2.54 g/cm3 (anhydrous)2.25 g/cm3 (monohydrate)1.46 g/cm3 (decahydrate)
  • Melting point: 851 °C (anhydrous)100 °C (decomp, monohydrate)34 °C (decomp, decahydrate)
  • Boiling point : 1600 °C (anhydrous)
  • Solubility in water: 22 g/100 ml (20 °C)7 g/100 g (0 °C)21.6 g/100 g (20 °C)45 g/100 g (100 °C)
  • Solubility : insoluble in alcohol, ethanol
  • Basicity (pKb) : 3.67
  • Refractive index (nD) :1.495 (anhydrous)1.420 (monohydrate)
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Application & Usage :

  • Manufacture of glass is one of the most important uses of sodium carbonate
  • Sodium carbonate is used as a pH regulator to maintain stable alkaline conditions
  • It is often used as an electrolyt
  • In domestic use, it is used as a water softener during laundry hence called Washing Soda
  • In dyeing with fiber-reactive dyes, sodium carbonate is used to ensure proper chemical bonding of the dye with the fibers, typically before dyeing
  • Sodium carbonate is a food additive (E500) used as an acidity regulator, anti-caking agent, raising agent and stabilizer
  • Sodium carbonate is used by the brick industry as a wetting agent to reduce the amount of water needed to extrude the clay
  • Sodium carbonate is used in toothpastes, where it acts as a foaming agent, an abrasive, and to temporarily increase mouth pH.
  • Sodium carbonate is used to create the photo process known as reticulation.
  • Sodium carbonate may be used for safely cleaning silver