professional manufacturer of
Phenylmethyl silicone oil & Diffusion Pump oil
SingShine Silicones Inc.
SingShine 272# Diffusion Pump Fluid
Equal to Dow Corning 702
1. Structure formular
C6H5 CH3 CH3 CH3
︱ ︱ ︱ ︱
CH3-Si -O-〔-Si-O-〕〔-Si-O-〕- Si -CH3
︱ ︱ ︱ ︱
C6H5 C6H5 CH3 CH3
Property Value Viscosity (25°C )mm2/s 45 Refractive Index 1.51 Specific Gravity at 25°C 1.07 Flash Point °C 195 Ultimate Vacuum, Pa 10-6 saturated vapor pressure, Pa 1×10-6
Viscosity (25°C )mm2/s
Specific Gravity at 25°C
Flash Point °C
Ultimate Vacuum, Pa
saturated vapor pressure, Pa
It possesses excellent heat-stability, good resistance to oxidation and radiation. Its saturation vapour pressure is very low under room temperature, and changes sharply with the variation of temperature.The minimal vacuum level can reach 10-9mmHg , so the fluid is most suitable to be used in High Vacuum Diffusion Pump.
It is widely used in High Vacuum Diffusion Pump of electronic industry, metallurgic industry, instrument manufacture industry, and also widely used as transmission liquid and heat-carrier at high temperature in instruments.
Transport as non-hazardous chemicals,keeping away from rain and sunlight.
Shelf life: 2 years. It still can be used after being tested and qualified when exceeding the shelf life
SingShine 272# Diffusion Pump Fluid is available in 200 kg Iron Drum, 10/25/50kg pails.