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    Factory   Address:Mohekou Industrial Park, Huaishang District, Bengbu, Anhui, China
    Contact:Nathan Zhang

  • Vacuum Diffusion Pump Oils IOTA704

    Silicone Diffusion Pump Oil IOTA704 


    1. 1,1,5,5-Tetraphenyl-1,3,3,5-tetramethyltrisiloxane

    2. 704 silicone diffusion pump Fluid

    3. 704 diffusion pump fluid

    4. Oil for diffusion pumps

    Cas No: 3982-82-9

    Chemical structure:

    Diffusion Pump Oil IOTA704 is a colorless transparent oily, single-component fluid designed for high vacuum of 10-7torr (untrapped). It performs well in tough, rugged applications and offers quick pump down, even after exposure to air at operating temperatures. IOTA704 is thermally and chemically stable allowing it to keep pump jets free of tars and hard carbon.

    Technical Index

    Chemical composition: Tetramethyl tetraphenyl trisiloxane

    Ultimate Vacuum, torr (untrapped): 10-7~10-8

    Saturated Vapor Pressure, torr : 5x10-8

    Specific Gravity: 1.06 ~ 1.07

    Viscosity (25°C), cSt: 38±3

    Flash Point °C: ≥210

    Refractive Index 25°C: 1.5500~1.5600

    Congealing Point °C: -35

    Molecular Description: 484


    Diffusion Pump Fluid IOTA704 can be used in variety of applications, including:

    Electrical and electronics industry

     TV tubes, fluorescent tubes, cathode ray tubes

     ordinary bulbs


     rectifier metallised film vacuum system

    Optical industry

     surface improvements

     anti reflective coatings

     optical filters and mirrors

    Metallurgy industry

     high-vacuum furnaces

     melting, degassing and sintering refractory metals; thick-film deposition

    Plastics industry

     surface improvements

     mirror coatings

     protective coatings

     film coatings

    Other industries

     processing metals and fuels


     molecular plants

     R & D plants

     mass spectrometry


    Be used as transmission fluid in high-temperature carriers and various instruments.

    Package, Transportation & Storage

    1. Diffusion Pump Oil IOTA704 is available in 1kg plastic bottles,1gallon plastic drums,5kg plastic drums,25kg plastic drums, 25kg Iron drums or 200kg Iron drums.

    2. Transport as non-hazardous chemicals, keeping away from rain and sunlight.

    3. Shelf life: 3 years.

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