Ammonium fluoride
- Số CAS
- 12125-01-8
- Khối lượng phân tử
- 37.04
- Công thức phân tử / ký hiệu hóa học
- FH4N
Mô tả
White hexagonal crystal or powder, easy deliquescence, corrosion glass, soluble in cold water, slightly soluble in alcohol, insoluble in ammonia. In the hot water decomposition for ammonia and ammonium hydrogen fluoride. The solution is acidic. The skin of corrosive toxic.ỨNG DỤNG
Will hydroquinone and in closed circuit
heating and cooling system of hot water and cooling water, the water side metal
can play corrosion inhibition. Hydroquinone furnace water oxygen agent, in the
boiler water preheating oxygen will hydroquinone to join them, to remove
residual dissolved oxygen (do).
Keywords:Surface treatment chemicals
Phiếu kiểm nghiệm
|
Product name |
ammonium fluoride |
CAS:12125-01-8 |
||
|
Apearance |
White hexagonal crystal or powder |
|||
|
Test items |
guarantee reagent (GR) |
analytically pure(AR) |
chemically pure(CP) |
|
|
NH4F |
≥98.0 |
98.0 |
96.0 |
|
|
clarity test |
qualified |
qualified |
qualified |
|
|
Ignition residue (in sulfate meter |
≤0.005 |
0.02 |
0.05 |
|
|
Free acid (in NH4HF2 meter) |
≤0.2 |
0.5 |
1.0 |
|
|
(Cl) |
≤0.0005 |
0.005 |
0.01 |
|
|
(SO4)
|
≤0.005 |
0.01 |
0.01 |
|
|
(SiO3) |
≤0.04 |
0.15 |
0.30 |
|
|
(Fe) |
≤0.0005 |
0.002 |
0.004 |
|
|
(Cu) |
≤0.0005 |
-- |
-- |
|
|
Heavy metal (Pb meter) |
≤0.0005 |
0.001 |
0.001 |
|