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Dow Corning 704 Diffusion Pump Fluid
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A clear, tetramethyltetra-phenyltrisiloxane, single-component fluid for high vacuums of 10-7 to 10-8 torr range (untrapped) and 10-11 (trapped).
Dow Corning 702, 704 and 705 Diffusion Pump Fluids are designed for high vacuum and for fast pumping of large volumes of gas or vapor in production operations.
Specific Gravity at 25'C (77'F) : 1.07
Viscosity at 25'C (77'F), cSt : 39
Flash Point, open cup, 'C ('F) : 221 (430)
Boiling Point, at 0.5 torr, 'C ('F) : 215 (419)
Typical Boiler Temperature, 'C ('F) : 220 (428)
Surface Tension, dynes/cm : 37.3
Heat of Vaporization, kcal/g mole : 25.5/200'C (392'F)
Molecular Description : Tetramethyltetra-phenyltrisiloxane
Molecular Weight : ?484
Industrial field others
Dow Corning Corp/Corporate Headquarters
Phone 517-496-5369; 800-248-2481
Fax 517-496-4688
Homepage -
E-mail
Address 3100 James Savage Rd., PO.Box 994, Midland, MI 48686-0994
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