Description
Physical Properties of Apiezon Oils Invoil Oils = Apiezon Oils
| DIffusion pump oils | Type B | Type BW | Type C |
| Vapor Pressure,vtorr @20°C | 10-6 | 10-6 | 10-7 |
| Boiling Point,°C @ 1 torr | 220 | 225 | 225 |
| Flash Point (open cup)°F | 470 | 480 | 510 |
| Pour Point(ASTM) °F | 15 | 10 | 5 |
| Density, g/ml @ 20°C | 0.872 | 0.882 | 0.875 |
 @ 40°C | 0.859 | 0.869 | 0.863 |
| Viscosity, kinematic,cS @ 20°C | 142 | 361 | 283 |
| @ 50°C | 49.3 | 98.1 | 90 |
| @ 100°C | 7.0 | 10.1 | 10.6 |
| Coefficient of Expansion per °C over 20-30°C (ASTM) | 0.00073 | 0.00070 | 0.00069 |
| Thermal Conductivity Btu/in | 0.91 | 0.89 | 0.96 |
