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.
1, 1, 3, 5, 5-Pentaphenyl-1, 3, 5-trimethylsiloxane;
275 Ultra-high Vacuum Diffusion Pump Silicone Oil;
Phenylmethylsiloxane Oligomers.
The grade 275 is the alternative to DC-705 separately.
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 |
546 |
Flash Point |
About 300℃ |
Boiling Point |
255℃ |
Specific Gravity at 25℃ |
1.09 |
Appearance |
White fluid |
Shelf Life |
2Years |
Equivalent grade |
DC-705 |
Keept it in the original, sealed container, at or below 25℃.
The Shelf Life is 2 years.
