The IOTA704 Silicone Diffusion Pump Oil, also known as 1,1,5,5-Tetraphenyl-1,3,3,5-tetramethyltrisiloxane, 704 silicone diffusion pump fluid, 704 diffusion pump fluid, or simply Oil for diffusion pumps, with a CAS number of 3982-82-9, is a colorless, transparent, and single-component fluid specifically engineered for achieving high vacuum levels of 10-7 torr (untrapped).
Silicone Diffusion Pump Oil IOTA 704-IOTA (phenylsilicone.com)
