Sodium Sulfate Anhydrous Uses and Properties

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liquid chemical in lab glassware

Sodium Sulfate Anhydrous = molecular formula (Na2SO4) is the sodium salt of sulfuric acid.

Sodium sulfate anhydrous is a white crystalline solid also known as the mineral thenardite, while the decahydrate Na2SO4.10H2O has been known as Glauber’s salt or mirabilis.

Na2SO4.7H2O is changed to mirabilite when it is cooled. Mirabilite is the regular mineral type of the decahydrate. Around 66% of the world’s creation of sodium sulfate is gotten from mirabilite. It is also produced from by-products of chemical processes such as hydrochloric acid production.

There are two sorts of sodium sulfate anhydrous natural and by-product, also known as synthetic.

  • Natural sodium sulfate is produced from naturally occurring brines and crystalline deposits found in California and Texas.
  • It is also found as a constituent of saline lakes, such as the Great Salt Lake in Utah. Synthetic sodium sulfate is recouped as a by-product of different manufacturing processes.
  • The two kinds of sodium sulfate has a few significant and helpful applications in different consumer products.
  • In a survey of the top 50 basic organic and inorganic chemicals made in the United States, sodium sulfate ranked 47th in terms of quantity produced.

Sodium Sulfate Anhydrous Properties:

Molecular formulaNa2SO4
Molecular weight142.04 gm/mole (anhydrous), 322.20gm /mole (decahydrate)
AppearanceWhite crystalline solid
OdourOdourless
Boiling point14290C (anhydrous)
Flashpoint8000C
Melting point8840 °C (anhydrous), 32.40 °C (decahydrate)
Density2.664 gm/ml (anhydrous), 1.464 gm/ml (decahydrate)
Refractive index1.468 (anhydrous), 1.394 (decahydrate)
SolubilitySoluble in water, glycerol andhydrogen iodide and insoluble inethanol

Sodium Sulfate Anhydrous Uses

  • Sodium sulfate anhydrous is utilized to dry organic liquids.
  • As a filler in powdered home clothing cleansers. 
  • As a fining operator which expels small air bubbles from molten glass.
  • Glauber’s salt, the decahydrate was used as a laxative which removes certain drugs such as acetaminophen from the body.
  • For defrosting windows, in carpet fresheners, starch manufacture, as an additive to cattle feed.
  • In the manufacture of detergents and in the Kraft process of paper pulping.

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