ジエチレングリコールジブチルエーテル 化学特性,用途語,生産方法
外観
無色～ほとんど無色, 澄明の液体
溶解性
水に難溶 (0.3wt%, 20℃), アルコール, エーテル, アセトンに易溶。エタノールに極めて溶けやすく、水に溶けにくい。
用途
溶剤。
化学的特性
clear colorless to yellowish liquid
使用
Butyl diglyme is used to extract gold from
hydrochloric acid solutions containing other metals. Treatment of the diglyme
extract with hydrogen or oxalic acid precipitates the ionic gold as gold powder.
一般的な説明
Colorless liquid. Floats on water.
空気と水の反応
Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick, 1979 p.151-154, 164]. Insoluble in water.
反応プロフィール
Bis(2-butoxyethyl)ether may react violently with strong oxidizing agents. Incompatible with nitric acid. May form salts with strong acids and addition complexes with Lewis acids. In other reactions, which typically involve the breaking of the carbon-oxygen bond, relatively inert.
健康ハザード
May be harmful by inhalation, ingestion and skin absorption. Causes eye and skin irritation. Material is irritating to mucous membrane and upper respiratory tract.
火災危険
Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flash back.
安全性プロファイル
Moderately toxic by
ingestion. Mddly toxic by skin contact.
Experimental reproductive effects. A skin
and eye irritant. See also GLYCOL
ETHERS. Combustible when exposed to
heat or flame. To fight fire, use foam or
alcohol foam. When heated to decomposition it emits acrid smoke and
irritating fumes.
合成
Into 120 g of 60% NaH and 500 ml of toluene were added dropweise 329 g of butyl bromide and 486 g of diethylene glycol butyl ether at 50 ℃. Diethylene glycol dibutyl ether was obtained by distillation (b.p.: 256 ℃. under normal pressure) from the reaction mixture.
純化方法
Dibutylcarbitol is freed from peroxides by slow passage through a column of activated alumina. The eluate is then shaken with Na2CO3 (to remove any remaining acidic impurities), washed with water, and stored with CaCl2 in a dark bottle [Tuck J Chem Soc 3202 1957]. [Beilstein 1 IV 2395.]
ジエチレングリコールジブチルエーテル 上流と下流の製品情報
原材料
準備製品