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langfang tianke biotechnology
professional production base of general chemical reagent and pharmaceutical accessories
hotline: 86-15076659665
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ammonium sulfate

molecular formula: (nh4)2so4

molecular weight: 132.14

cas no:7783-20-2

properties:  colorless crystal or semi-transparent powder. relative density is 1.769. it breaks up into ammonia and ammonium bisulfate if heated to 100℃. soluble in water, insoluble in ethyl alcohol and acetone.

uses: as analytical reagent, precipitant, and masking agent.

standard:  maximum assay of impurities is in %

 

specification/item analytically pure-ar chemically pure-cp high pure
assay[(nh4)2so4)] /%  ≥99.0 ≥99.0 ≥99.0
ph value(50g/l solution, 25℃) 4.8~6.0 4.8~6.0 4.8~6.0
clarity test qualified qualified qualified
water insoluble matter/% ≤0.002 ≤0.01 ≤0.005
ignition residue (as sulfate) /% ≤0.01 ≤0.05
chloride (cl) /% ≤0.000 5 ≤0.001 ≤0.001
nitrate (no3) /% ≤0.001 ≤0.005
phosphate (po4) /% ≤0.0005 ≤0.002
arsenic (as) /% ≤0.00002 ≤0.0002 ≤0.0003
calcium (ca) /% ≤0.005
iron (fe) /% ≤0.0002 ≤0.0005 ≤0.0005
heavy metal (pb) /% ≤0.0005 ≤0.002 ≤0.0003

 

packing:  woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.

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langfang tianke biotechnology co., ltd.
add: sanghang industrial park, dacheng county,
hebei, china
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