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Why is sodium carbonate used in making glass, detergents, and cleansers?

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Cluster of translucent, white salt crystals with sharp cubic shapes viewed under a microscope at high magnification against a dark background. — salt Salt crystal magnified.

Sodium carbonate (Na₂CO₃), also known as soda ash, is a versatile alkaline salt derived from sodium chloride through processes like the Solvay process. Its utility in various industries stems from its chemical properties:1

Glass Manufacturing: In the production of glass, sodium carbonate acts as a fluxing agent. By providing sodium oxide, it significantly lowers the melting point of silica (sand) from over 1,700 °C to approximately 850 °C, making the manufacturing process more energy-efficient and cost-effective.2
Detergents and Cleansers: As a strongly alkaline substance, sodium carbonate is highly effective for cleaning and bleaching applications. Its alkalinity helps in breaking down grease and grime, making it a fundamental ingredient in various detergents and cleaning formulations.31

While sodium carbonate is a distinct compound, it is closely linked to common salt (sodium chloride), which serves as the primary raw material for its industrial production.1