Dimethyl Silicone Fluids
Diethyl Silicone Fluids
Fluoro Silicone Fluids
Hydride Silicone Fluids
Hydroxy Silicone Fluids
Vinyl Silicone Fluids
Phenyl Silicone Fluids
Alkoxy Silicone Fluids
Diffusion Pump Fluids
Amino Silicone Fluids
Epoxy Silicone Fluids

Silicone Fluids - Diffusion Pump Fluid

SiSiB® PF8704

Chemical Structure
SiSiB® PF8704 Silicone Diffusion Pump Fluid is a single component fluid designed for high vacuum applications in the range of 10-6 to 10-8 torr (untrapped) and 10-10 to 10-11 torr (trapped).

Its low vapor pressure and thermal stability make it popular in processes such as vacuum coating, metallurgical work, and various other applications.

SiSiB® PF8704 is equal to DowCorning’s DC-704, Shin-Etsu’s HIVACF-4.
Typical Physical Properties
Product: SiSiB®PF8704
CAS No.: 3982-82-9
EINECS No. 223-620-5
Formula C28H32O2Si3
Molecular Weight: 484.82
Color and Appearance: Colorless to straw-colored fluid
Ultimate Vacuum, torr 10-7 to 10-8 untrapped
  10-10 to 10-11 trapped
Extrapolated Vapor Pressure, torr, 25°C 2 x 10-8
Specific Gravity at 25°C 1.07
Refractive Index at 25°C 1.550~1.560
Viscosity at 25°C 36~44 cSt
Flash Point, open cup 221°C
Boiling Point, 0.5 torr 215°C
Typical Boiler Temperature 220°C
Surface Tension, dynes/cm 37.3
Heat of Vaporization, kcal/g mol 25.5/250°C
SiSiB® PF8704 Diffusion Pump Fluid can be used in a variety of applications including: Aerospace, Electronics, Metallurgy, Vacuum Coatings, and Atomic Energy etc.
SiSiB® PF8704 is supplied in 5Kg pail, 25Kg pail, 200Kg steel drum, for more details, please visit Packing Centre.
Technical Library
Download Technical Data Sheet Safety Data Sheet

Download SiSiB® SILANES & SILICONES 2014

Silanes | Siliconates | Silicone Fluids | Silicone Polymer | Silicone Rubber | OH Polymer | Silicone Gum | Silicone Resins | Fumed Silicas |Silicone Emulsions | Foam Stabilizers | Silicone Surfactants | Coating Additives | Paint Additives | Antifoams | Defoaming Agents | Leveling Agents | Silicone Grease | Wetting Agents | Antigraffi Additives | Textile Finishes | Personal Care | Agricultural Adjuvant | Dispering Agent | Release Agent | Water Repellent