Introduction
Silicone Diffusion Pump Oil IOTA 704 stands as a cornerstone in the world of high-vacuum technology. Known for its exceptional performance and versatility, IOTA 704 is a single-component, colorless, transparent oily fluid specifically engineered to deliver unparalleled vacuum levels of 10^-7 torr (untrapped). This makes it an ideal choice for industries that require precision and reliability in their vacuum processes.

Chemical Composition and Properties
IOTA 704 is chemically identified as Tetramethyl tetraphenyl trisiloxane, with a CAS number of 3982-82-9. It exhibits remarkable thermal and chemical stability, ensuring that pump jets remain free from tars and hard carbon deposits, even after prolonged exposure to air at operating temperatures. Its technical specifications include an ultimate vacuum range of 10^-7~10^-8 torr, an extrapolated vapor pressure of 2x10^-8 at 25°C (77°F), a specific gravity of 1.06~1.07, and a viscosity of 38±3 cSt at 25°C. Additionally, it boasts a flash point of ≥210°C and a congealing point of -35°C, making it suitable for a wide range of operating conditions.

Applications Across Industries
The applications of IOTA 704 are vast and varied. In the electrical and electronics industry, it is used in TV tubes, fluorescent tubes, cathode ray tubes, ordinary bulbs, capacitors, and rectifier metallised film vacuum systems. The optical industry benefits from its use in surface improvements, anti-reflective coatings, optical filters, and mirrors. In metallurgy, IOTA 704 plays a crucial role in high-vacuum furnaces, melting, degassing, and sintering refractory metals, as well as thick-film deposition. The plastics industry utilizes it for surface improvements, mirror coatings, protective coatings, and film coatings. Beyond these, IOTA 704 finds applications in processing metals and fuels, accelerators, molecular plants, R&D plants, and mass spectrometry.