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sodium carbonate
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 |
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sodium carbonate pharmaceutical grade 99.5-100.5%