Chemical Name: Mixed phenylmethyl-dimethyl cyclosiloxane
English Alternative Names
Mixed Phenylmethyl-dimethyl Cyclosiloxane
702 Super High Vacuum Diffusion Pump Oil
702 Diffusion Pump Fluid
Phenylmethylsiloxane Oligomers
Oil for Diffusion Pump
Silicone Oil for Diffusion Pump
Silicone Diffusion Pump Oil
CAS NO: 68037-71-8
Chemical Structural Formula
Product Description
Vaccum Diffusion Pump Oil IOTA 702 is a kind of general purpose oil designed for fast pumping of large volumes of gas. It is used to produce vacuums in the range of 10-5 to 10-7 torr. It possesses excellent heat stability, good resistance to oxidation and radiation. Its vapour pressure is very low under room temperature, and changes sharply with the variation of temperature.
Technical Specifications
Chemical composition: Mixed Phenylmethyl-dimethyl Cyclosiloxane
Ultimate Vacuum, torr(untrapped): 10-6
Saturated Vapor Pressure, torr: 1x10-6
Specific Gravity: 1.08
Viscosity (25°C), cSt: 40±3
Flash Point °C: 300
Refractive Index 25°C: 1.51-1.53
Performance and Applications
Diffusion Pump Oil IOTA 702 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. 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: 2 years.
