A Polymethyl Ether, designed for an ultra high vacuum range: 10-10 torr.
Ultra low vapor pressure results in low ultimate pressures; there is no need for a cold trap and it is suitable for diffusion pumps. Santovac 5 may discolor with use but it will maintain its physical properties.
Typical physical properties of Santovac® 5:
| Vapor Pressure @ 25°C |
4 x 10-10 torr |
| Boiling Point @ 0.5 torr |
275°C |
| Density @ 25°C |
1.198 |
| Viscosity: cS @ 27°C |
1000 |
| @ 38°C |
363 |
| @ 99°C |
13.1 |
| @ 149°C |
4.5 |
| @ 260°C |
1.2 |
| Flash Point, open cup |
288°C |
| Pour point |
5°C |
| Autogeneous Ignition Temp. |
590°C |
| Refractive Index, nD25 |
1.6306 |