Santovac 5 Polyphenyl Ether Fluid

Santovac 5 and Santovac 5P ULTRA

Santovac® 5 and Santovac® 5P ULTRA are polyphenyl ether synthetic diffusion pump fluids capable of producing ultra-high vacuum in the 10-10 torr range. Thermally stable with exceptionally low volatility, these non-halogenated water white fluids exhibit extraordinary resistance to degradation from heat, oxygen, radiation, and chemical attack. Due to this fluids extremely low vapor pressure, backstreaming characteristics are lower than any other fluid, resulting in less contamination and longer operation.

Santovac 5P ULTRA and Santovac 5 polyphenyl ether fluids are ideal for use in many applications including laboratory, analytical and research operation, vacuum production, thin films, space simulation chambers, and optical coatings. Santovac 5P ULTRA undergoes an additional vacuum distillation step to further reduce the 3-ring and the 4-ring ether concentrations to below 0.02% and 0.1%, respectively. A smooth baseline without mass signatures corresponding to the 3- and 4-ring polyethers is important in mass spectrometer applications.

Santovac® is a registered trademark of SantoLubes.

  • Exceptionally low volatility
  • Thermal degradation resistance
  • Chemical resistance
  • Ionizing radiation resistance
  • High tolerance to pressure bursts
  • Lowest backstreaming
  • Chemical resistance

  • Aerospace
  • Aviation
  • Optical Coating
  • Extreme environments
  • Research and analysis

SpecificationSantovac 5Santovac 5P ULTRA
Vapor Pressure at 25ºC (torr)4x10-104x10-10
Viscosity at 40ºC (cSt)370 cSt368 cSt
Viscosity at 100ºC (cSt)13 cSt13.1 cSt
Pour Point (ºC)44
Flash Point (ºC)288290
Refractive Index at 25ºC1.6301.630
Thermal Stability (ºC)<453<453
Vapor Pressure at 260ºC (mmHg)0.20.2
Surface Tension (dynes/cm)49.949.9
Specific Gravity at 25ºC1.21.2

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