Super high vacuum diffusion pump oil SD274

1. Synonyms: 1,1,5,5-Tetraphenyl-1,3,3,5-tetramethyltrisiloxane/ Cas No.: [3982-82-9] 274 Super high vacuum diffusion pump oil Phenylmethylsiloxane Oligomers 2. Properties & Applications: The thermal silicone fluids are described in chemical notation as aromatic siloxane because of the presence of phenyl group.

High phenyl content fluids are utilized as heat-exchange fluids, dielectric coolant, impregnants for sintered metal bearing, and base oils for high temperature fluids.

Low phenyl content fluids are utilized at over temperature than high phenylsilicones and find extended temperature service applications as lubricating oils for critical devices such as timers and system involving rubber, plastic and aluminum mating surface.

SD274 silicone oil for super high vacuum diffusion pump is colorless, transparent oily fluid and owns very low saturated vapor pressure, good heat resistivity property, excellent resistance to high temperature, oxidant and radiate.

It is used in high vac., electronic industry, coating for high vac., particle accelerator, electronic microscope and display .SD274 is a single-component silicone diffusion pump fluid that performs well in tough, rugged applications. Also Alternatives Shin-Etsu,HIVACF-4, Dow Corning 704 Diffusion Pump Fluid 3.

Specifications: Standard HG2-1492-83 Appearance Colorless transparent liquid Viscosity(25oC) 35~41 mm2/s Refractive Index (25oC) 1.55~1.565 Flash point Min.

210oC Specific gravity (25oC) 1.05~1.08 g/ml Freezing point -35°C Heat loss ≤5 x 10-7 torr Vapor pressure (pa) <6.65x10-6 4.Packing, storage and transportation: 1) No-dangerous chemical 2) Life span is 3 years 3) Packed if needed, 1kg, 5kg, 50kg or 200kg barrel (plastic / iron)