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Diffusion Pump Fluid


Diffusion Pump Fluid is a kind of silicone fluid for high to ultra-high vacuum and for fast pumping of large volumes of gas

or vapor in production operations.

The two grade 274,275 are the alternative to DC704 and DC705 separately.

 

Specification:

274

275

Chemical Name

Tetramethyl tetraphenyl trisiloxane

Trimethyl pentaphenyl trisiloxane

CAS No.

 3982-82-9

3390-61-2

Ultimate Vacuum

1×10-7 Torr

1×10-9Torr

Vapor Pressure at 25℃

2×10-8 Torr

3×10-9 Torr

Resistance to Oxidation

Does not oxidize

Does not oxidize

Latent Heat

220.5J/gm

230.5J/gm

Molecular Weight

484

546

Flash Point

About 270℃

About 300℃

Boiling Point

220℃

255℃

Specific Gravity at 25℃

1.07

1.09

Appearance

White fluid

White fluid

Shelf Life

2Years

2Years

Equivalent grade

DC-702,D-31,CVC4

DC-705


Storage and Shelf Life

Keept it in the original, sealed container, at or below 25℃.

The Shelf Life is 2 years.


More info. about Diffusion Pump Fluid ,please contact sales@chemixsc.com






 

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