What is the Difference Between Glauber Salt and Common Salt?

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The main difference between Glauber salt and common salt lies in their chemical composition and taste. Here are the key differences:

  • Chemical Composition: Glauber salt contains hydrated sodium sulfate, whereas common salt contains sodium chloride as the major component.
  • Taste: Glauber salt has a bitter taste, while common salt has a salty taste.

Both Glauber salt and common salt are inorganic compounds and are salts of sodium. They are water-soluble compounds, but Glauber salt provides a higher depth of color in dyeing applications compared to common salt.

Comparative Table: Glauber Salt vs Common Salt

Here is a table comparing the differences between Glauber salt and common salt:

Property Glauber Salt Common Salt
Chemical Formula Na2SO4.10H2O NaCl
Appearance Colorless, white, greenish-white, or yellowish-white White
Texture Granular or coarse, well-formed crystals Granular
Crystal Lattice Structure Octahedral -
Taste Bitter and salty Salty
Use in Dyeing Evens out color intake of fabrics, strength of shade is higher when Glauber salt is used Not used for dyeing
Medicinal Use Mild laxative Not used as a laxative
Solubility in Water Soluble, with solubility increasing more than tenfold between 0°C and 32.384°C Soluble
Dehydration Undergoes dehydration when heated or exposed to dry air, turning into white powder (Na2SO4) Does not undergo dehydration
Stability Unstable in dry air, rapidly dehydrates Stable in dry air

Glauber salt is the decahydrate form of sodium sulfate and is also known as mirabilite. Common salt, on the other hand, is the sodium chloride salt and is commonly used for household needs. The key difference between Glauber salt and common salt is the presence of hydrated sodium sulfate in Glauber salt and sodium chloride as the major component in common salt.