Heating and cooling mediums, Rotitherm® H 250 Rotitherm® H 250Silicone oil for heating baths.Steam pressureat +20 °C: ~ 1,33 x 10-4 N/m (10-6 Torr) at +150 °C: ~ 1,33 x 10-2 N/m (10-4 Torr)Kinematic viscosityat +20 °C: 200 mm2 s-1 (cSt) at +100 °C: 34 mm2 s-1 (cSt); D 1,03; F -55 °C