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Octoil-S Dioctylsebacate Diffusion Pump Fluid
Octoil-S Dioctylsebacate Diffusion Pump Fluid
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Octoil-S Dioctylsebacate Diffusion Pump Fluid

Size Options for Octoil-S Dioctylsebacate Diffusion Pump Fluid
 
Size 1 Liter
Item Number 00031-XP
Availability Out Of Stock
Price  $213.33
Size 500 ml
Item Number 00031-RA
Availability In Stock
Price  $148.00
Size 100 ml
Item Number 00031-MB
Availability In Stock
Price  $33.61

Octoil-S is a low cost diffusion pump fluid.  While good vacuum levels can be obtained, this fluid is very unforgiving if exposed to air while hot.

CAS #122-62-3

Documents

Octoil was widely used in older mass spectrometers such as Alcatel and Veeco helium leak detectors. This fluid is very sensitive to air inrush but is otherwise an excellent diffusion pump oil capable of trapped pressures to 1X10-8 torr.

Octoil-S is a higher purity version used primarily in microscopes and other analytical instruments.  

Typical Characteristics-Octoil

Viscosity
Vapor Pressure (torr)
Pour Point
Flash Point
52
3X10-7
17°C
196°C

Typical Characteristics-Octoil-S

Viscosity
Vapor Pressure (torr)
Pour Point
Flash Point
18
3X10-7
21°C
°C