2,3-ブタンジオール 化学特性,用途語,生産方法
外観
無色〜黄褐色, 澄明の液体
定義
本品は、次の化学式で表される二価アルコールである。
溶解性
水, エタノール, アセトンに易溶。水及びエタノールに極めて溶けやすい。
用途
凍結防止剤としてエチレングリコールの代用として、またタバコ、織物、接着剤の湿潤剤または軟化剤として用いられるが、重要な用途は脱水によりブタジエンを合成することである。
化粧品の成分用途
保湿.湿潤剤、保水剤、溶剤、香料
説明
2,3-Butanediol(23BD) is the organic compound with the formula (CH3CHOH). It is classified as a vic-diol (glycol). It exists as three stereoisomers, a chiral pair and the meso isomer. All are colorless liquids. Applications include precursors to various plastics and pesticides.
2,3-Butanediol is a commodity chemical usually produced from oil. It can be used as a precursor in the manufacture of a range of chemical products, including the solvents methyl ethyl ketone (MEK), gamma-butyrolactone (GBL), and 1,3-butadiene.
化学的特性
viscous colourless liquid, or colourless to white solid
使用
2,3-Butanediol (2,3-BD) is a promising bulk chemical with a potentially wide range of applications e.g., in the manufacture of printing inks, perfumes, synthetic rubber, fumigants, antifreeze agents, fuel additives, foodstuffs and pharmaceuticals. Its high heating value and ability to increase the octane number of fuels make 2,3-BD a promising drop-in fuel. It can also be converted to methyl-ethyl ketone (MEK), which is considered an effective liquid fuel additive. After combination with MEK and hydrogenation reaction, 2,3-BD can be converted to octane, which is used to produce high-quality aviation fuel.
製造方法
2,3-Butanediol is prepared by hydrolysis of 2,3-epoxybutane:
(CH3CH)2O + H2O → CH3(CHOH)2CH3
定義
ChEBI: 2,3-Butanediol is a butanediol in which hydroxylation is at C-2 and C-3. It is a butanediol, a glycol and a secondary alcohol.
反応性
2,3-Butanediol undergo dehydration to form butanone (methyl ethyl ketone):
(CH3CHOH)2 → CH3C(O)CH2CH3 + H2O
It can also undergo deoxydehydration to form butene:
(CH3CHOH)2 + 2 H2 → C4H8 + 2 H2O
一般的な説明
2,3-Butanediol is a chiral compound which is extensively utilized in chemical feedstocks and liquid fuels.
安全性プロファイル
Mildly toxic by
ingestion. See also ETHYLENE GLYCOL.
Flammable when exposed to heat or flame.
Incompatible with oxidizing materials. To
fight fire, use alcohol foam, CO2, dry
chemical. When heated to decomposition it
emits acrid smoke and fumes
純化方法
Recrystallise it from isopropyl ether at low temperature. [Beilstein 1 IV 2524.]
2,3-ブタンジオール 上流と下流の製品情報
原材料
準備製品