|
Product name |
Ammonium sulfate |
|
Specification |
Reagent grade |
|
Molecular formula |
(NH4)2SO4 |
|
CAS |
7783-20-2 |
|
H.S. CODE |
3102210000 |
|
Molecular weight |
132.14 |
|
Appearance |
Colorless crystal powder |
|
Package |
25KG Woven bags or fiber drums |
Property：
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.
Application：
Analytics reagents. As the support point electrochemical analysis and solution quality. Also used in the microbiological media, ammonium salt preparation.
Test standard：GB/T 1396－1993
|
Test items |
Specification |
|
|
AR grade |
CP grade |
|
|
Appearance |
Colorless crystal powder |
Colorless crystal powder |
|
Assay |
≥99.0% |
≥99.0% |
|
pH |
4.8～6.0 |
4.8～6.0 |
|
Appearance of solution |
Conform |
Conform |
|
Water insoluble |
≤0.002% |
≤0.01% |
|
Residue on ignition |
≤0.01% |
≤0.05% |
|
Chloride |
≤0.0005% |
≤0.001% |
|
Nitrate |
≤0.001% |
≤0.005% |
|
Phosphate |
≤0.0005% |
≤0.002% |
|
Arsenic |
≤0.00002% |
≤0.0002% |
|
Calcium |
≤0.005% |
- |
|
Iron |
≤0.0002% |
≤0.0005% |
|
Heavy metals |
≤0.0005% |
≤0.002% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
