Diffusion Pump Fluid is a kind of silicone fluid for high to ultra-high vacuum and for fast pumping of large volumes of gasor vapor in production operations.
The grade 275 is the alternative to DC705 separately.
1, 1, 3, 5, 5-Pentaphenyl-1, 3, 5-trimethylsiloxane;
275 Ultra-high Vacuum Diffusion Pump Silicone Oil;
Phenylmethylsiloxane Oligomers.
Specification:
|
275
|
Chemical Name
|
Trimethyl pentaphenyl trisiloxane
|
CAS No.
|
3390-61-2
|
Ultimate Vacuum
|
1×10-9Torr
|
Vapor Pressure at 25℃
|
3×10-9 Torr
|
Resistance to Oxidation
|
Does not oxidize
|
Latent Heat
|
230.5J/gm
|
Molecular Weight
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546
|
Flash Point
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About 300℃
|
Boiling Point
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255℃
|
Specific Gravity at 25℃
|
1.09
|
Appearance
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White fluid
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Shelf Life
|
2Years
|
Equivalent grade
|
DC-705
|
Keept it in the original, sealed container, at or below 25℃.
The Shelf Life is 2 years.