Selenious acid
- Số CAS
- 7783-00-8
- Khối lượng phân tử
- 128.97
- Công thức phân tử / ký hiệu hóa học
- H2O3Se
Mô tả
Apearances: Colorless hexagonal crystal. Insoluble in water. Soluble in ethanol. Insoluble in ammonia.
ỨNG DỤNG
Can
be used as oxidant system other selenium compounds, used for making effective
drugs for the treatment of endemic Keshan disease sodium selenite, pharmaceutical
intermediates, chemical reagents, used as a chemical reagent and reducing agent.
Keywords:Surface treatment chemicals
Phiếu kiểm nghiệm
|
Product name |
Selenious acid |
CAS: 7783-00-8 |
|
|
Apearances |
Colorless hexagonal crystal |
||
|
TEST ITEMS |
TEST RESULT |
||
|
|
AR |
CP |
|
|
H2O3Se |
≥ 97.0 |
95.0 |
|
|
Water insoluble matter |
≤ 0.005 |
0.01 |
|
|
Residue on ignition |
≤ 0.1 |
0.2 |
|
|
Cl |
≤ 0.005 |
0.005 |
|
|
Sulfate and selenate (sulfuric acid) |
≤ 0.05 |
0.1 |
|
|
N |
≤ 0.05 |
0.05 |
|
|
Fe |
≤ 0.002 |
0.005 |
|
|
Heavy metals (as Pb) |
≤ 0.02 |
0.06 |
|