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Properties of Vacuum Pump Oils



[ Pfeiffer P3 Oil ]   [ Grade 19 Oil ]
[ Santovac 5 Polyphenyl Ether ]   [ Lion S Diffusion Pump Oil ]


Properties of Pfeiffer P3 Pumping Fluid

CompositionBlend of highly refined oils and additives
AppearanceClear Liquid
Density at 15°C / 59°F .87
Vapor Pressure at 20°C / 68°F6.6 x 10-5 mbar
Viscosity at 25°C / 77°F210 cs
Viscosity at 40°C / 104°F94 cs
Pour Point-15°C / 5°F
Flash Point264°C / 508°F
Ultimate Pressure1 x 10-3 mbar



Properties of Grade 19 Rotary Pump Oil

Product PELCO Ultra 19 Ultragrade 19
Vapor Pressure at 20°C /68°F   1 x 10-8 mbar
Vapor Pressure at 25°C /77°F 1 x 10-3 mbar  
Vapor Pressure at 100°C /212°F   1 x 10-3 mbar
Molecular Weight   420
Specific Gravity 0.87 at 25°C / 77°F 0.86 at 15°C / 59°F
Viscosity at 20°C / 68°F   143.7 cs
Viscosity at 25°C / 77°F 143.7 cs  
Viscosity at 40°C / 104°F 55 cs 48.6 cs
Pour Point -15°C / 5°F -16°C / 4°F
Flash Point 213°C / 446°F 230°C / 446°F
Auto ignition Point 244°C / 471°F 355°C / 670°F
Ultimate Pressure   1 x 10-3 mbar



Typical Properties of Santovac® 5 Diffusion Pump Oil

Appearence: 5-Ring Polyphenyl Ether
Appearence: Light Yellow Clear Liquid
Vapor Pressure at 25°C / 77°F: 4 x 10-10 torr
Boiling Point at 760mm Hg: 476°C / 889°F
Specific Gravity, 25°C / 77°F: 1.198
Viscosity,
   at 27°C / 80.6°F: 1000 cs
   at 38°C / 101°F: 363 cs
   at 99°C / 210°F: 13.1 cs
   at 149°C / 300°F: 4.5 cs
   at 204°C / 400°F: 2.1 cs
   at 260°C / 500°F: 1.2 cs
Pour Point: 5°C / 40°F
Flash Point (COC): 288°C
Fire Point (COC): 349°C / 660°F
Autogeneous Ignition Temperature: 590°C / 1094°F
Refractive Index, ND25: 1,6306
Density,
   at 20°C: 1.204
   at 38°C: 1.187
Ultimate Pressure: 1 x 10-10 torr



Properties of Lion S Diffusion Pump Oil

Compositionalkyl naphthalene
Appearancepale yellow liquid
Specific Gravity0.904
Viscosity at 40°C /104°F37 cs
Pour Point-5°C / 23°F
Flash Point220°C / 428°F
Refractive Index at 30°C1.5139 - 1.5172
Ultimate Pressure3.8 x 10-9 mbar / 5 x 10-9 torr