2-エチル-1-ヘキサノール 化学特性,用途語,生産方法
外観
無色澄明の液体
溶解性
水に不溶, 多くの有機溶媒に可溶。
解説
2-エチル-1-ヘキサノール無色のわずかに粘ちゅうな液体．融点－76 ℃ 以下，沸点183.5 ℃．d2020 0.8340．n20D 1.4313．各種有機溶剤に可溶，水に微溶．おもに二塩基酸とエステル化して可塑剤(ジオクチルフタレートなど)とする．ほかに塗料の成分，泡消し剤，合成潤滑油製造原料となる．
森北出版「化学辞典（第2版）
用途
2-エチルヘキサノールは、無水フタル酸やアジピン酸等とのエステルであるフタル酸ビス(2-エチルヘキシル)（DOP、DEHP）、アジピン酸ビス(2-エチルヘキシル)等として、塩ビ等の可塑剤に使用されます。
また、アクリル酸とのエステルであるアクリル酸2-エチルヘキシルは、粘接着剤や塗料等として使用されます。
一方、様々な有機物をよく溶解することから、低揮発性の溶媒としても広く利用されています。
用途
可塑剤、合成潤滑剤
製造
2-エチル-1-ヘキサノール,オクチルアルコールともいう．炭素数8の脂肪族飽和アルコールの一種．製法は，プロペンからオキソ合成法でブチルアルデヒドを合成し，これをアルドール縮合して2-エチル-2-ヘキセナールとし，さらに水素化して製造する．この工程を一段で行うアルドックス法も工業化されている．
特徴
1．2-エチルヘキサノール（2EH）はオクタノールとも呼ばれ、8つの炭素を持つ高級アルコールの一種です。
2．2-エチルヘキサノールは水にほとんど溶解せず、ほとんどの有機溶媒に溶解します。
化学的特性
2-Ethylhexanol is a clear, colorless to pale yellow oily liquid. It has a mild, oily, sweet, slightly floral odor reminiscent of rose and sweet, fatty-floral taste with a fruity note. Soluble in 720 times water, miscible in most organic solvents.
天然物の起源
Reported found in papaya, peach, pear, blackberry, strawberry, cabbage, Parmesan and mozzarella cheese,
butter, roasted chicken, cognac, sherry, grape wines, tea, avocado, kiwifruit, crab and clam.
使用
2-Ethylhexanol is the most important C8 alcohol and is mainly used as the alcohol component for the manufacture of ester plasticizers for soft poly(vinyl chloride) (PVC). Other minor uses include the manufacturing of 2-ethylhexyl acrylate, as a dispersing agent and wetting agent, as a solvent for gums and resins, as a cosolvent for nitrocellulose, and in ceramics, paper coatings, rubber latex, textiles, and fragrances.
製造方法
2-ethylhexanol synthesis: Condensation of acetaldehyde into butanol aldehyde, dehydration to obtain crotonaldehyde, hydrogenation to n-butyraldehyde, condensation dehydration to obtain 2-ethyl-2-hexenal, and then hydrogenation to obtain 2-ethylhexanol.
主な応用
2-Ethyl-1-hexanol is suitable for use in a study to compare its susceptibilities of dynamic heat capacity and dielectric polarization under isothermal conditions. It may be used to study lipase-catalyzed transesterification (alcoholysis) of rapeseed oil and 2-ethyl-1-hexanol in the absence of solvent. 2-Ethyl-1-hexanol may be used in broadband dielectric spectroscopy studies of the polyalcohols-glycerol, xylitol and sorbitol. It may be used in the preparation of porous beads.
定義
ChEBI: 2-Ethylhexanol is a primary alcohol that is hexan-1-ol substituted by an ethyl group at position 2. It has a role as a volatile oil component and a plant metabolite.
一般的な説明
2-ethyl hexanol appears as a dark brown liquid with an aromatic odor. Insoluble in water and less dense than water. Flash point between 140 - 175°F. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption.
空気と水の反応
Insoluble in water.
反応プロフィール
2-Ethylhexanol is an alcohol. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. 2-Ethylhexanol is incompatible with strong oxidizing agents and strong acids.
健康ハザード
Anesthesia, nausea, headache, dizziness; mildly irritating to skin and eyes.
火災危険
2-Ethylhexanol is combustible.
安全性プロファイル
Moderately toxic by
ingestion, skin contact, intraperitoneal,
subcutaneous, and parented routes. An
experimental teratogen. Other experimental
reproductive effects. A severe eye and
moderate skin irritant. Mutation data
reported. A dangerous fire hazard when ex posed to heat or flame; can react vigorously
with oxidzing materials. To fight fire, use
foam, CO2, dry chemical. When heated to
decomposition it emits acrid smoke and
fumes. See also ALCOHOLS.
発がん性
Male and female F344 rats
were dosed by oral gavage with 0, 50, 150, or 500 mg/kg
2-ethylhexanol (0.005% in aqueous Cremophor EL, a polyoxyl
35 castor oil), 5 days/week for 2 years. There were no
differences of biological importance between the vehicle
control and a water control group that was included in the
study. There was no evidence of treatment-related neoplastic
lesions in any of the exposed groups.
2-エチル-1-ヘキサノール 上流と下流の製品情報
原材料
準備製品