Chemical Name: Pentaphenyltrimethyltrisiloxane
English Alternative Names
1,1,3,5,5-Pentaphenyl-1,3,5-Trimethylsiloxane
705 Super High Vacuum Diffusion Pump Oil 705
705 Diffusion Pump Fluid
PhenylmethylsiloxaneOligomers
Oil for Diffusion Pump
CAS NO: 3390-61-2
EINECS NO.: 222-222-9
Chemical Structural Formula
Product Description
Diffusion Pump Oil IOTA 705 is a colorless transparent oily liquid, single-component fluid designed for ultrahigh vacuum applications in the range of 5x(10-9~10-10) torr (untrapped). The vapor pressure and the best resistance to radiation.
Technical Specifications
Chemical composition: Pentaphenyl Trimethyl Trisiloxane
Ultimate Vacuum, torr(untrapped): 5x(10-9~10-10)
Saturated Vapor Pressure, torr: 5x10-10
Specific Gravity: 1.090-1.100
Viscosity (25°C), cst: 170-175
Viscosity (40°C), cst: 61-64
Flash Point °C: ≥243
Refractive Index 25°C: 1.5765-1.5785
Congealing Point °C: ≤-14 ~ -18
Molecular Description: 546
Performance and Applications
Diffusion Pump Fluid IOTA 705 can be used in variety of applications, including:
Electrical and Electronics Industry
TV tubes, fluorescent tubes, cathode ray tubes
ordinary bulbs
capacitors
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
accelerators
molecular plants
R & D plants
mass spectrometry
Others
Be used as transmission fluid in high-temperature carriers and various instruments.
Packaging and Storage
1. Diffusion Pump Oil IOTA 705 is available in 1kg plastic bottles, 1 gallon 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.
