molecular formula: (NH4)2SO4
CAS: 31691-97-1
Appearance:
Colorless crystal
Properties:
Colorless crystalline or translucence powder. The relative density 1.769. Hot to 100 ℃ began to decompose into ammonia and acid hydrogen amines. Soluble in water, insoluble in ethanol and acetone.
Use:
Analytics reagents. As the support point electrochemical analysis and solution quality. Also used in the microbiological media, ammonium salt preparation.
Details:
|
Test item |
Specification |
|
AR |
CP |
|
Appearance |
Conform |
Conform |
|
Assay /% |
≥99.0 |
≥99.0 |
|
Clarify degrees test |
Conform |
Conform |
|
Water insoluble/% |
≤0.002 |
≤0.01 |
|
Burning residua /% |
≤0.01 |
≤0.05 |
|
Chloride (Cl)/% |
≤0.0005 |
≤0.001 |
|
Nitrate (NO3)/% |
≤0.001 |
≤0.005 |
|
phosphate (PO4)/% |
≤0.0005 |
≤0.002 |
|
Arsenic (As)/% |
≤0.00002 |
≤0.0002 |
|
Calcium (Ca) /% |
≤0.005 |
|
|
Ferric (Fe)/% |
≤0.0002 |
≤0.0005 |
|
Heavy metal (Pb)/% |
≤0.0005 |
≤0.002 |
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