Soda ash generally refers to sodium carbonate, which is an inorganic compound with a chemical formula of Na2CO3 and a molecular weight of 105.99. Sodium carbonate is a white powder, tasteless and odorless, easily soluble in water, the aqueous solution is strongly alkaline, it will absorb moisture and agglomerate in humid air, and part of it will become sodium bicarbonate. The preparation methods of sodium carbonate include combined soda making method, ammonia soda method, Lublin method, etc., and can also be processed and refined by trona. 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 domestic washing, acid neutralization and food processing.
Basic Information
| Item | Soda Ash light | Soda ash dense |
| Appearance : | Free flowing, odorless,
fine white powder | Free flowing, odorless,
fine white powder |
| Na2co3 : | 99.2%min | 99.2% min. |
| Whiteness: | 80%min | -- |
| Chloride (NaCl) : | 0.7%max | 0.70% max. |
| PH value: | 11~12 | -- |
| Fe: | 0.0035%max | 0.0035% max. |
| Sulphate(So4): | 0.03%max | 0.03% max. |
| Water insoluble: | 0.03%max | 0.03% max. |
| Bulk density: | -- | 0.90G/ML min |
| Particle size : | -- | 180um sieve remaining70% min |
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Chemical properties
The aqueous solution of sodium carbonate is alkaline and has certain corrosiveness. It can undergo metathesis reaction with acid, and can also undergo metathesis reaction with some calcium salts and barium salts. The solution is alkaline and can turn phenolphthalein red.
Stability
It has strong stability, but it can also be decomposed at high temperature to generate sodium oxide and carbon dioxide
Long-term exposure to the air can absorb moisture and carbon dioxide in the air, generate sodium bicarbonate, and form hard lumps
The crystalline hydrate of sodium carbonate (Na2CO3·10H2O) is easily weathered in dry air
Application
The glass industry is the largest consumption sector of soda ash, consuming 0.2 tons of soda ash per ton of glass.
1.Glass : the glass industry is a large consumer sector of soda ash.soda consumption per ton of glass is 0.2T.
2. Detergent : It is used as detergent in wool rinsing,medicine and tanning.
3. Printing and dyeing : printing and dyeing industry is used as a water softener.
4. Buffer :as buffering agent,neutralize and dough improver,it can be used for pastry and noodle food,and can be used
appropriately according to production needs.