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
|
chemical pure-cp
|
assay(nh3) /%
|
21.0-22.0
|
21.0-22.0
|
clarity test
|
qualified
|
qualified
|
water insoluble matter
|
≤0.002
|
≤0.01
|
ignition residue(sulfate)
|
≤0.002
|
≤0.01
|
chloride(cl)
|
≤0.0005
|
≤0.003
|
sulfur compound(so4)
|
≤0.002
|
≤0.005
|
iron (fe)
|
≤0.0001
|
≤0.0005
|
heavy metal(pb)
|
≤0.0005
|
≤0.001
|
packing: woven bag, kraft bag or fiber drum lined with plastic, net weight is 25kg.
|