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The chemical formula of sodium carbonate is Na2CO3, commonly known as soda ash, soda, alkali ash and washing alkali, which is white powder and strong electrolyte in general. With a density of 2.532g/cm3 and a melting point of 851 ° C, it is easy to dissolve in water and has the general properties of salt. It is a weak acid salt, slightly soluble in anhydrous ethanol and insoluble in propanol. After dissolving in water, it will undergo hydrolysis reaction, making the solution alkaline and corrosive to a certain extent. It can neutralize with acid, generate corresponding salt and emit carbon dioxide. It can decompose at high temperature to produce sodium oxide and carbon dioxide. Long term exposure to the air can absorb water and carbon dioxide in the air, generate sodium bicarbonate, and form a hard block. Hygroscopicity is very strong, it is easy to form hard block, and it does not decompose at high temperature.
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