F15
Diffusion Pump Fluids
Scientific Instrument Services, Inc.
TM
FAX: 908-806-6631
www.sisweb.com/catalog/08/F15
INVOIL
®
705 Diffusion Pump Fluid
-
Ultra High Vacuum Applications
-
Extremely Low Vapor Pressure Capabilities
-
Little or No Backstreaming
-
Identical to Dow Corning 705
I
nvoil 705 silicone diffusion pump fluid is a single component fluid designed for ultra
high vacuum systems in the 10
-7
to 10
-9
torr range. With the use of traps, Invoil 705
is capable of attaining a pressure of 10
-11
torr. The low vapor pressure, low back-
streaming rate and the high resistance to oxidation and radiation make this diffusion pump
fluid ideal for many ultra high vacuum applications such as those in mass spectrometers
and electron microscopes.
INVOIL
®
704 Diffusion Pump Fluid
-
Superior Vapor Pressure Capabilities
-
Resistant to Oxidation
-
Thermal Stability
-
Quick Pumpdown Cycles
-
Identical to Dow Corning 704
I
nvoil 704 is a single component silicone diffusion pump fluid for high vacuums 10
-6
to 10
-8
torr range. This diffusion pump fluids' low vapor pressure and thermal
stability make it popular in many systems such as mass spectrometers and
electron microscopes. It performs well in most applications and offers quick pumpdown,
even after exposure to air under operating conditions.
Specifications
Vapor Pressure @ 25°C..............2 x 10
-8
torr
Boiling Point @.50 torr: ..........220°C (428°F)
Viscosity @ 40°C : ..............24.2 cst (115 SUS)
Viscosity @ 100°C: .............6.2 cst (46.5 SUS)
Pour Point: ...............................<-9°C (<16°F)
Flash Point: .............................221°C (430°F)
Fire Point: ........................................None
Density: ................................1.07 gm/cc
Specifications
Vapor Pressure @ 25°C: ...2.4 x 10
-9
torr
Boiling Point @ .50 torr: ...250°C (482°F)
Viscosity @ 40°C: .............66cst (306 SUS)
Viscosity @100°C: ...........9.8 cst (58.4 SUS)
Pour Point: .........................<0°C (<32°F)
Flash Point: ......................243°C (470°F)
Fire Point: .........................None
Density: ............................1.09 gm/cc
INVOIL
®
702 Diffusion Pump Fluid
-
Superior Vapor Pressure Capabilities
-
Resistant to Oxidation
-
Thermal Stability
-
Quick Pumpdown Cycles
I
nvoil 702 is designed for the rapid pumping of large
volumes of gas. It has the important advantage of thermal stability. The silicone
based fluid is resistant to air at operating temperatures, so the pumps require no
cooling between cycles.
Specifications
Vapor Pressure @ 25°C ..............3.3 x 10
-6
torr
Boiling Point @.50 torr: .............190°C (374°F)
Viscosity @ 40°C :................26.8 cst (127.3 SUS)
Viscosity @ 100°C: ................6.2 cst (46.5 SUS)
Pour Point: ..................................<0°C (<32°F)
Flash Point: ...............................193°C (380°F)
Fire Point: ..........................................None
Density: ..................................1.07 gm/cc
Part No.
Description
Invoil 702, 500cc bottle
Invoil 702, 1 gal. bottle
Part No.
Description
Invoil 704, 500cc bottle
Invoil 704, 1 gal. bottle
Part No.
Description
Invoil 705, 500cc bottle
Invoil 705, 1 gal. bottle
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