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|Section2= |Section3= |Section4= }} Ethylammonium nitrate or ethylamine nitrate〔Wagaman, Kerry L (Liquid monopropellant ) United States Patent 6001197, Publication Date 12/14/1999〕 (EAN) is a salt with formula or ()·. It is an odorless and colorless to slightly yellowish liquid with a melting point of 12 °C. This compound was described by Paul Walden in 1914,〔 〕 and is believed to be the earliest reported example of a room-temperature ionic liquid. ==Synthesis and properties== Ethylammonium nitrate can be produced by heating ethyl nitrate with an alcoholic solution of ammonia or by reacting ethylamine with concentrated nitric acid.〔 It has a relatively low viscosity of 0.28 poise or 0.028 Pa·s at 25 °C and therefore a high electrical conductivity of about 20 mS·cm−1 at 25 °C. It boils at 240 °C and decomposes at about 250 °C.〔 Its density at 20 °C is 1.261 g/cm3.〔(【引用サイトリンク】url=http://www.carlroth.com/media/_en-de/sdpdf/2035e.PDF )〕 The ethylammonium ion () has three easily detachable protons which are tetrahedrally arranged around the central nitrogen atom, whereas the configuration of the anion is planar. Despite the structural differences, EAN shares many properties with water, such as micelle formation, aggregation of hydrocarbons, negative enthalpy and entropy of dissolution of gases, etc. Similar to water, EAN can form three-dimensional hydrogen bonding networks. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ethylammonium nitrate」の詳細全文を読む スポンサード リンク
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