Apiezon Oil B

Consists of esters or specially selected hydrocarbon fractions. They were developed for vapor-diffusion pump fluids:

  • High purity, very low pressure, very stable
  • Pressures lower than 10-7 torr obtainable
  • No need for cold trap
  • Good pumping speed
  • No corrosive deposits or vapors

Physical Properties of Apiezon Oils

  Type B
Vapor Pressure,vtorr @20°C 10-6
Boiling Point,°C @ 1 torr 220
Flash Point (open cup)°F 470
Pour Point(ASTM) °F 15
Density, g/ml @ 20°C 0.872
@ 40°C 0.859
Viscosity, kinematic,cS @ 20°C 142
@ 50°C 49.3
@ 100°C 7.0
Coefficient of Expansion per °C over 20-30°C (ASTM) 0.00073
Thermal Conductivity Btu/in 0.91
Invoil Oil B

Good for small or large vapor diffusion pumps. Good pumping speed and high backing pressure. If a cold trap is used, oil B can obtain a higher vacuum than oil C does.

SKU: 60720
Pack: 500 mL
$235.50