Silicone oil is used as a calibration media in temperature controlled baths. Different types of silicone oil are chosen for specific temperature ranges based on their viscosity at those temperatures. They have good thermal characteristics and low flammability.

• Silicone oil bath fluid type 200.20
• Usable range: 10 °C to 230 °C
• FlashPoint: 232 °C

Atmospheric pressure affects the usable range of some fluids. The temperatures quoted are at sea level.
Flash point is the temperature at which a vapor (not the fluid) will ignite if exposed to an open flame. When the flame is removed, the vapor will stop burning. (Open cup method). ?