Sodium carbonate chemical formula is Na?CO?

I. Explanation of Sodium Carbonate:

It is an inorganic compound with chemical formula Na2CO3, molecular weight 105.99 , also known as soda ash, but the classification belongs to the salt, not alkali, and also known as soda or alkali ash in international trade. Sodium carbonate is a white powder, tasteless and odorless, soluble in water, aqueous solution is strongly alkaline, in the humid air will absorb moisture caking, partially changed to sodium bicarbonate.

Sodium carbonate can be made by combined alkali method, ammonia alkali method, Lubran method, etc. It can also be refined by natural alkali processing. It is an important inorganic chemical raw material, mainly used in the production of flat glass, glass products and ceramic glaze. It is also widely used in life washing, acid neutralization and food processing.

Two, physical properties:

Sodium carbonate at room temperature for the white odorless powder or particles, density 2.54g/cm3, melting point of 856?C. Easily soluble in water, but also soluble in glycerol, 20 ℃, every one hundred grams of water can be dissolved in 20 grams of sodium carbonate.

35.4 ℃ when the maximum solubility, 100 grams of water can dissolve 49.7 grams of sodium carbonate, slightly soluble in anhydrous ethanol, difficult to dissolve in propanol, 1% aqueous solution PH 11.5, in aqueous or molten state can conduct electricity, and the aqueous solution has astringent and slippery feeling.

Applications:

1, glass industry:

It is the largest source of consumption of soda ash, each ton of glass consumes 0.2t. It is mainly used in float glass, picture tube shell, optical glass, etc. It is mainly used in the production of glass, glass, glass, etc. It is also used in the production of glass, glass, etc. It can be used in the production of glass, glass, etc.

2, used in chemical industry, metallurgy, etc.:

The use of heavy soda ash can reduce alkali dust, reduce the consumption of raw materials, improve labor conditions, but also improve the quality of products, and at the same time to reduce the alkali powder on the refractory material erosion, to extend the service life of the furnace.

3, as a buffer, neutralizer and dough improver:

Can be used in pastry and noodle food, according to the production needs of the appropriate amount of use.

4, as a detergent:

Used in wool rinsing, bath salts and medicine, alkali agent in tanning.

5, used in the food industry:

For neutralizer, bulking agent, such as the manufacture of amino acids, soy sauce and noodle foods such as steamed bread, bread and so on. Can also be formulated into lye added to pasta to increase the elasticity and ductility. Sodium carbonate can also be used to produce monosodium glutamate.