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molecular formula: nahco3
molecular weight: 84.01
properties: white crystalline powder. relative density is 2.20. it breaks up at about 50℃ and turns into sodium carbonate at 100℃. soluble in water and slightly soluble in ethyl alcohol.
uses: as analytical reagent and buffer agent. it can be used in organic synthesis and pharmaceutical industry.
standard: the maximum content of impurities is in percentage content
| standard/item |
analytical pure-ar
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chemical pure-cp
|
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assay
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≥99.8
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≥99.8
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clarity test
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qualified
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qualified
|
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water insoluble matter
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≤0.01
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≤0.02
|
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chloride and chlorate (cl)
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≤0.002
|
≤0.005
|
|
sulfur compound (so4)
|
≤0.005
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≤0.01
|
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nitrogen compound (n)
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≤0.001
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≤0.002
|
|
phosphate (po4)
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≤0.002
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≤0.005
|
|
silicate (sio3)
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≤0.005
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≤0.01
|
|
magnesium (mg)
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≤0.003
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≤0.005
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potassium (k)
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≤0.01
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≤0.02
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aluminium (al)
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≤0.01
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≤0.02
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calcium (ca)
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≤0.007
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≤0.01
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iron (fe)
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≤0.001
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≤0.002
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|
heavy metal (pb)
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≤0.001
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≤0.002
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packing: woven bag, kraft bag or fiber drum lined with plastic, net weight is 25kg.
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