DC 704 Dow Corning Silicone fluid

DOW CORNING® 704 diffusion pump fluid is a single component, colorless fluid for high vacuums of 10^-6 torr (untrapped) to 10^-8 torr (trapped). It performs well in tough, rugged applications and offers quick pumpdowns, even after exposure to air at operating temperatures. It is thermally and chemically stable allowing it to keep pump jets free of tars and hard carbon. It is resistant to oxidation, radiation, and explosion and produces low ultimate vacuums while maintaining relatively high boiler pressure and throughput. DOW CORNING 704 diffusion pump fluid is used to produce high vacuums for the aerospace and electronic industries, for metallurgical and research needs and for certain special vacuum coating applications.

SPECIFICATIONS
Ultimate Pressure @ 25°C	2.3x10-6 untrapped to
Boiling point @ .5 torr	From 2.3x10-6 untrapped to 2x10-8 trapped
Pour Point	428 °F
Boiler temperature	428 °F
Flash Point	430 °F
Specific Gravity 77°F / 77°F	1.07
Color	Water white to light straw
Viscosity @ 77 °F	182 SUS