SANTOVAC fluid is often used as a vacuum diffusion pump fluid and operates efficiently, economically, and safely to produce ultra-high vacuum of 5 x 10-10 torr or greater, at 25°C. Diffusion pumps are the most economical and reliable means of reaching such low pressures and SANTOVAC 5 has proven to be, without a doubt, the best pump fluid available for this type of equipment.
A five ring polyphenyl ether which provides an outstanding vacuum with low vapor pressure when used in diffusion pumps, and GC-MS systems. Santovac fluids are 100% PPE, containing only hydrogen, oxygen, and carbon, and are known for their low back-streaming characteristics. CAS #2455-71-2