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molecular formula: nh4hco3
molecular weight: 79.06
cas no: 1066-33-7
properties: white crystalline powder or block with ammoniacal odor. it breaks up into ammonia, carbon dioxide and water if heated to 60℃. it is soluble in water and insoluble in ethyl alcohol and acetone.
uses: as analytical reagent. in preparing ammonium salts, synthesizing dyestuffs and plastic foaming.
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(nh3) /%
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21.0-22.0
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21.0-22.0
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clarity test
|
qualified
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qualified
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water insoluble matter
|
≤0.002
|
≤0.01
|
|
ignition residue(sulfate)
|
≤0.002
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≤0.01
|
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chloride(cl)
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≤0.0005
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≤0.003
|
|
sulfur compound(so4)
|
≤0.002
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≤0.005
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iron (fe)
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≤0.0001
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≤0.0005
|
|
heavy metal(pb)
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≤0.0005
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≤0.001
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packing: woven bag, kraft bag or fiber drum lined with plastic, net weight is 25kg.
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