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Diethyl ether
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== Uses == The dominant use of diethyl ether is as a solvent. One particular application is in the production of cellulose plastics such as [[cellulose acetate]].<ref name="kirk">{{cite encyclopedia | title =Ethers, by Lawrence Karas and W. J. Piel | encyclopedia =Kirk‑Othmer Encyclopedia of Chemical Technology | publisher =John Wiley & Sons, Inc. | year =2004 }}</ref> ===Laboratory solvent=== It is a common solvent for the [[Grignard reaction]] in addition to other reactions involving organometallic reagents.<ref>{{cite journal |doi=10.15227/orgsyn.011.0098 |first1=W. W.|last1=Moyer|first2= C. S.|last2=Marveltitle=Triethyl Carbinol |title=Triethyl Carbinol |journal=Organic Syntheses |date=1931 |volume=11 |page=98 }}</ref> These uses exploit its basicity. Diethyl ether is a popular non-polar solvent in [[liquid-liquid extraction]]. As an extractant, it is immiscible with and less [[density|dense]] than water. Although immiscible, it has significant [[solubility]] in [[Water (molecule)|water]] (6.05 g/(100 ml) at 25 °C<ref name=merckindex/>) and dissolves 1.5 g/(100 g) (1.0 g/(100 ml)) water at 25 °C.<ref name="water_in_ether">{{cite journal |author1=H. H. Rowley |author2=Wm. R. Reed | year = 1951 | title = Solubility of Water in Diethyl Ether at 25 ° | journal = J. Am. Chem. Soc. | volume = 73 | issue = 6 | pages = 2960 | doi = 10.1021/ja01150a531 |bibcode=1951JAChS..73.2960R }}</ref> === Fuel === Diethyl ether has a high [[cetane number]] of 85–96 and, in combination with petroleum distillates for gasoline and diesel engines,<ref>{{cite web|url=http://www.valvoline.com/pages/products/product_detail.asp?product=38§ion=402 | title = Extra Strength Starting Fluid: How it Works | publisher = Valvovine | access-date=2007-09-05 |archive-url = https://web.archive.org/web/20070927222427/http://www.valvoline.com/pages/products/product_detail.asp?product=38§ion=402 <!-- Bot retrieved archive --> |archive-date = 2007-09-27}}</ref> is used as a [[starting fluid]] because of its high volatility and low [[flash point]]. Ether starting fluid is sold and used in countries with cold climates, as it can help with cold starting an engine at sub-zero temperatures. For the same reason it is also used as a component of the fuel mixture for [[carbureted compression ignition model engine]]s.
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