Braycote® Vacuum Greases
Gas solubility data for the base fluid
Technical Report
PFPE Fluids
Gas Solubility
PFPE’s (perfluoropolyethers) are a line of high performance fluids with an excellent
chemical inertness. The solubility of various bases in PFPE’s is given in the following
table.
|
GAS |
BUNSEN COEFFICIENT AT 20°C(1)
PFPE |
|
Helium |
0.061 |
|
Hydrogen |
0.100 |
|
Nitrogen |
0.232 |
|
Oxygen |
0.359 |
|
Air |
0.260 |
|
Carbon Dioxide |
1.500 |
|
Cl2 |
- |
|
F2 |
- |
|
NF3 |
-
|
|
CF4 |
- |
|
C2F6 |
- |
|
SiH4 |
- |
|
SiF4 |
-
|
|
SF6 |
4.290 |
|
C2H2CIF3 |
12.555 |
|
CHCl2F |
12.696 |
|
CHClF2 |
4.325
|
(1) Bunsen coefficient is defined as the volume of gas, reduced to 0°C and 706 Torr.
which is absorbed by the unit volume of solvent (at the temperature of measurement)
under a gas pressure of 760 Torr.
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Sunday July 05, 2009
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