Sodium Carbonate, is a kind of inorganic compound, molecular formula for NA ?CO?, molecular weight 105.99, also known as soda. Classification belongs to salt, does not belong to alkali. Sodium carbonate is a white odorless powder or particle with water absorption under normal temperature，also known as soda or alkali ash in international trade. It is an important inorganic chemical raw material, mainly used in the production of plate glass, glassware and ceramic glaze, also widely used in household washing, acid neutralization and food processing.
CAS #: 497-19-8
EINECS #: 207-838-8;231-420-4
Melting point: 851℃
Density: 2.532g/cm³
Executive standard: GB210-92
Properties: white crystalline powder, easily soluble in water, aqueous solution is alkaline, easy to absorb water and carbon dioxide when exposed to air.
|
Item |
light sodium carbonate |
|||
|
Specification/Model |
Ⅰ category |
|||
|
item |
superior |
top grade |
qualified grade |
measured value |
|
total alkali content (as dry Na2CO3)％≥ |
99.2 |
98.8 |
98.0 |
99.2 |
|
total alkali content (as wet Na2CO3)％≥ |
97.9 |
97.5 |
96.7 |
98.7 |
|
chloride (as Na2CO3)%≤ |
0.70 |
0.90 |
1.20 |
0.62 |
|
mass fraction of (as dry basis)%≤ |
0.0035 |
0.006 |
0.010 |
0.0012 |
|
water insolubles %≤ |
0.03 |
0.10 |
0.15 |
0.02 |
|
transparency |
|
|
|
90.2 |
|
appearance |
white crystal powder |
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