Ads
related to: high temperature oil bath
Search results
Results from the WOW.Com Content Network
Overheating the oil bath can result in a fire hazard, especially if mineral oil is being used. Generally, the maximum safe operating temperature of a mineral oil bath is approximately 160 °C (320 °F), the oil's flash point. Mineral oil cannot be used above 310 °C (590 °F) due to the compound's boiling point.
An oil bath is employed for temperatures over up to and above 100 °C. The heated bath is heated on an electric hot plate, or with a Bunsen burner. The reaction vessel (Florence flask, Erlenmeyer flask, or beaker) is immersed in the heated bath. A thermometer is usually kept in the fluid to monitor the temperature.
The oil level is a little low now to compensate for expansion when heating commences. The Thiele tube, named after the German chemist Johannes Thiele, is a laboratory glassware designed to contain and heat an oil bath. Such a setup is commonly used in the determination of the melting point or boiling point of a substance.
Pecan oil: 243 °C [16] 470 °F Rapeseed oil : 220–230 °C [17] 428–446 °F Rapeseed oil : Expeller press: 190–232 °C: 375–450 °F [18] Rapeseed oil : Refined: 204 °C: 400 °F Rapeseed oil : Unrefined: 107 °C: 225 °F Rice bran oil: Refined: 232 °C [19] 450 °F Safflower oil: Unrefined: 107 °C: 225 °F [3] Safflower oil: Semirefined
The sample is then heated, either by a heating block or an oil bath, and as the temperature increases, the sample is observed to determine when the phase change from solid to liquid occurs. The operator of the apparatus records the temperature range starting with the initial phase-change temperature and ending with the completed phase-change ...
This is because carbon must diffuse out of the graphite until it has reached the equilibrium concentration dictated by the temperature and the phase diagram. This step may be done in many types of furnaces, in a high-temperature salt bath, or via direct flame or induction heating. Numerous patents describe specific methods and variations.
Ads
related to: high temperature oil bath