sodium carbonate pharmaceutical grade 99.5-100.5%

sodium carbonate molecular formula: Na2CO3 CAS: 497-19-8 Appearance:White powder

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%