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:
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275
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Chemical Name
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Trimethyl pentaphenyl trisiloxane
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CAS No.
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3390-61-2
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Ultimate Vacuum
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1×10-9Torr
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Vapor Pressure at 25℃
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3×10-9 Torr
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Resistance to Oxidation
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Does not oxidize
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Latent Heat
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230.5J/gm
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Molecular Weight
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546
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Flash Point
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About 300℃
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Boiling Point
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255℃
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Specific Gravity at 25℃
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1.09
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Appearance
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White fluid
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Shelf Life
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2Years
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Equivalent grade
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DC-705
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Keept it in the original, sealed container, at or below 25℃.
The Shelf Life is 2 years.
