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Product name
Sodium carbonate
Specification
Reagent grade
Molecular formula
Na2CO3
CAS
497-19-8
H.S. CODE
2836200000
Molecular weight
105.99
Appearance
White granule powder
Package
25KG Woven bags or fiber drums
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Property：
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 ℃ start decomposing. Melting point 851 ℃, soluble in water, soluble in alcohol.
Application：
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.
Test standard：GB/T 639-2008
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Test items |
Specification |
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AR grade |
CP grade |
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Appearance |
White powder |
White powder |
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Assay |
≥99.8% |
≥99.8% |
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Appearance of solution |
Conform |
Conform |
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Water insoluble |
≤0.01% |
≤0.02% |
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Residue on ignition |
≤1.0% |
≤1.0% |
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Chloride |
≤0.002% |
≤0.005% |
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Sulfide |
≤0.005% |
≤0.01% |
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Total nitrogen |
≤0.001% |
≤0.002% |
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Phosphate and silicate |
≤0.006% |
≤0.013% |
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Magnesium |
≤0.002% |
≤0.005% |
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Aluminium |
≤0.003% |
≤0.01% |
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Potassium |
≤0.005% |
≤0.02% |
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Calcium |
≤0.01% |
≤0.02% |
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Iron |
≤0.0005% |
≤0.001% |
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Heavy metals |
≤0.0005% |
≤0.001% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
