| Hydrogen fluoride anhydrous |
Chinese alias: hydrofluoric Acid
CAS RN:7664-39-3
EINECS No.:231-634-8
Molecular formula: DF
Molecular weight: 21.0125
Use: used in atom energy industry, fluoride and others, and still used in stainless steel, non-iron metal acid cleaning and others. |
| Hydrofluoric Acid |
Properties
| |
Unit |
|
| Molecular formula |
|
HF |
| Molecular weight |
|
20.008 |
| Melting point |
°C |
-83.37 |
| Boiling point |
°C |
19.51 |
| Specific gravity(25°C liquid) |
g/cm3 |
0.9576 |
| Steam vapor(25°C) |
Mpa |
0.1229 |
| Critical temperature |
°C |
188 |
| Critical pressure |
Mpa |
0.6480 |
| Critical density |
g/cm3 |
0.29 |
| Heat of gasification during boiling |
kilojoule/mole |
7.493 |
Quality index
| |
HF%≥ |
H2O%≤ |
SO2%≤ |
Fixed acid(H2SO4)%≤ |
H2SiF6%≤ |
| Special excellent grade |
99.98 |
0.01 |
0.001 |
0.003 |
0.006 |
| Excellent grade |
99.95 |
0.03 |
0.007 |
0.005 |
0.010 |
| First grade |
99.90 |
0.06 |
0.015 |
0.020 |
0.020 |
| Qualified |
99.70 |
0.10 |
0.030 |
0.050 |
0.050 |
|
| Industrial hydrofluoric Acid |
| Grade |
Excellent grade |
First grade |
Qualified |
| |
HF30-45 |
HF50-70 |
HF30-45 |
HF50-70 |
HF30-45 |
HF50-70 |
| HF%≥ |
30-45 |
50-70 |
30-45 |
50-70 |
30-45 |
50-70 |
| H2SiF6%≤ |
0.02 |
0.02 |
0.2 |
0.5 |
2.5 |
5.0 |
| Fixed acid)H2SO4)%≤ |
0.02 |
0.05 |
0.05 |
0.08 |
1.0 |
2.0 |
|
| Calcium fluoride |
Quality index
| |
CaF2%≥ |
SiO2%≤ |
CaCO3%≤ |
H2O%≤ |
Other microelements |
| Special excellent grade |
98.0 |
0.60 |
0.30 |
0.50 |
10.0 |
all meeting state standard |
| First grade |
98.0 |
0.8 |
0.30 |
| Second grade |
97.5 |
1.0 |
0.30 |
| Third grade |
97.5 |
1.40 |
0.30 |
Granularity: -100 meshes 85-95% or -325 meshes≤30%
Packing: plastic weaving bag: 1500kg，1000kg，50kg |
