Original
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Molecular weight：132.14
CAS NO:7783-20-2
【Appearance】It is colorless crystal or semitransparent powder. Relative density is 1.769. It is soluble in water, insoluble in alcohol and acetone.
【Usage】It can be used as analytical reagent, such as precipitator and screening agent, etc.
【Standard】The highest impurity content is counted by %
|
Specification Index name |
Analytically pure-AR |
Chemical pure-CP |
High purity |
|
Content[(NH4)2SO4)] /% |
≥99.0 |
≥99.0 |
≥99.0 |
|
PH value(50g/L solvent,25℃) |
4.8~6.0 |
4.8~6.0 |
4.8~6.0 |
|
Clarity test |
Qualified |
Qualified |
Qualified |
|
Water insoluble/% |
≤0.002 |
≤0.01 |
≤0.005 |
|
Ignition residue( counted by 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 |
－ |
－ |
|
Ferrum(Fe) /% |
≤0.0002 |
≤0.0005 |
≤0.0005 |
|
Heavy metal( counted by Pb) /% |
≤0.0005 |
≤0.002 |
≤0.0003 |
【Packing】Woven bag lining with plastic bag, kraft bag or fiber can. Net weight is 25kg.
