Properties:
Water insoluble, white powder or small particles. Has the water absorbability, absorbs moisture in the air gradually becoming a hydrate. The relative density 2.532. 400 °C start decomposing. Melting point 851 °C, soluble in water, soluble in alcohol.
Use:
Analytics reagents, such as make reference reagent, sample dissolution fire-resistant and precipitation agent, the slow granule, emission spectral analysis sample volatilize. Also used in the preparation of sodium salt, sodium glass and film print wash.
Details:
|
Test item |
Specification |
|
AR |
CP |
|
Assay (Na2CO3) /% |
≥99.8 |
≥99.8 |
|
Clarify degrees test |
Conform |
Conform |
|
Water insoluble/% |
≤0.01 |
≤0.02 |
|
Dry weightlessness /% |
≤1.0 |
≤1.0 |
|
Chloride (Cl) /% |
≤0.002 |
≤0.005 |
|
Sulfur compounds (SO4) /% |
≤0.005 |
≤0.01 |
|
Nitrogen compounds (N) /% |
≤0.001 |
≤0.002 |
|
Phosphate and Portland (SiO3) /% |
≤0.006 |
≤0.013 |
|
Magnesium (Mg) /% |
≤0.002 |
≤0.005 |
|
Aluminum (Al) /% |
≤0.003 |
≤0.01 |
|
Potassium (K) /% |
≤0.005 |
≤0.02 |
|
Calcium (Ca) /% |
≤0.01 |
≤0.02 |
|
Ferric (Fe) /% |
≤0.000 5 |
≤0.001 |
|
Heavy metal (Pb) /% |
≤0.000 5 |
≤0.001 |
