| 词条 | Oil bath |
| 释义 |
An oil bath is a type of heated bath used in a laboratory, most commonly used to heat up chemical reactions. It's essentially a container of oil that is heated by a hot plate or (in rare cases) a Bunsen burner. UseThese baths are commonly used to heat reaction mixtures more evenly than would be possible with a hot plate alone, as the entire outside of the reaction flask is heated. . Generally, silicone oil is used in modern oil baths, although mineral oil, cottonseed oil and even phosphoric acid have been used in the past.[1] HazardsOverheating 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 oC, the oil's flash point. Mineral oil can't be used above 310oC in any cases, due to the compound's boiling point. If higher temperatures are needed, a silicone oil or a sand bath may be used instead.[2]{{Better source|reason=The cited source is primary, and is simply the MSDS of mineral oil|date=December 2017}} In mechanicsAnother use of an oil bath is to filter particulates out of air, by leading the air stream through an (unheated) oil bath. This type of air filter was used in car and tractor engines, but has been replaced by modern paper air filters; some small engine See also
References1. ^{{cite book|last1=Vogel|first1=A.|title=Vogel's Textbook of Practical Organic Chemistry|date=1996|publisher=Prentice Hall|page=71}} {{science-stub}}{{chemistry-stub}}2. ^{{Cite web|url=http://www.sciencelab.com/msds.php?msdsId=9927364|title=Mineral Oil MSDS|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=August 21, 2017}} 3 : Laboratory equipment|Filters|Particulate control |
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