SODIUM CARBONATE

Sodium Carbonate

Sodium carbonate (also known as washing soda, soda ash and soda crystals), Na2CO3, is a sodium salt of carbonic acid (soluble in water).

It most commonly occurs as a crystalline heptahydrate, which readily effloresces to form a white powder, the monohydrate. Pure sodium carbonate is a white, odorless powder that is hygroscopic (absorbs moisture from the air), has an alkaline taste, and forms a strongly alkaline water solution. Sodium carbonate is well known domestically for its everyday use as a water softener. It can be extracted from the ashes of many plants growing in sodium-rich soils, such as vegetation from the Middle East, kelp from Scotland and seaweed from Spain. Because the ashes of these sodium-rich plants were noticeably different from ashes of timber (used to create potash), they became known as “soda ash”.[11] It is synthetically produced in large quantities from salt (sodium chloride) and limestone by a method known as the Solvay process.

• Formula: Na2CO3
• Molar mass: 105.9885 g/mol
• Density: 2.54 g/cm³
• Melting point: 851 °C
• Boiling point: 1,633 °C
• Soluble in: Water

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