ヘキサン酸 化学特性,用途語,生産方法
外観
無色～うすい黄色, 澄明の液体
定義
本品は、次の化学式で表される脂肪酸である。
溶解性
水に微溶。エタノール, エーテルに易溶。エタノール及びアセトンに極めて溶けやすく、水にほとんど溶けない。
解説
ヘキサン酸，ヘキサンサン，カプロン酸ともいう．グリセリドとしてバター脂，やし油などに存在する．シアン化ペンチルを加水分解するか，ブチルマロン酸を分解すると得られる．不快臭のある無色の油状液体．融点1.5 ℃，沸点205 ℃，125 ℃(5.3 kPa)．d40400.9172．n20D1.4164．pKa 4.86．水に難溶，エタノール，エーテルなど普通の有機溶剤に易溶．香料などの原料として用いられる．
用途
香料、有機合成原料。
用途
人工香料、コバルト、マンガン、ニッケル及び希土類元素の抽出
用途
香料の原料。
用途
エステル、有機合成原料
化粧品の成分用途
洗浄剤、香料
使用上の注意
不活性ガス封入
説明
Hexanoic acid (also known as Caproci acid), is the carboxylic acid derived from hexane with the general formula C5H11COOH. It is a colorless oily liquid with an odor that is fatty, cheesy, waxy, and like that of goats or other barnyard animals. It is a fatty acid found naturally in various animal fats and oils, and is one of the chemicals that give the decomposing fleshy seed coat of the ginkgo its characteristic unpleasant odor. The primary use of hexanoic acid is in the manufacture of its esters for artificial flavors, and in the manufacture of hexyl derivatives, such as hexylphenols. Hexanoic acid belongs to medium chain triglycerides (MCT) that are widely used as a nutrition supplement that added to foods, drugs and cosmetics.
化学的特性
Hexanoic acid is a colourless liquid that has a sickening, sweaty, rancid, sour, sharp, pungent, cheesy, fatty, unpleasant odor reminiscent of copra oil. It exhibits an acrid taste. Hexanoic acid may be prepared by fractionation of the volatile fatty acids of coconut oil.
物理的性質
Hexanoic acid is oily, colorless or slightly yellow, and liquid at room temperature. Odor is that of Limburger cheese. Soluble in alcohol and ether; slightly soluble in water. It is derived from the crude fermentation of butyric acid; or by fractional distillation of natural fatty acids.
天然物の起源
Hexanoic acid is found in many foods, some of which are tapioca pearl, meat bouillon, pecan nut, and oval-leaf huckleberry. A secondary product of butyric fermentation; reported found in the essential oils of lavender, camphor, palmarosa, lemongrass and Juniperus phoenicea; in a few fruital aromas: apple, currant and strawberry; also identified among the constituents of petitgrain lime oil.
使用
Hexanoic acid is used to prepare esters by reacting with alcohols, which finds application in artificial flavors. It is also involved in the production of hexylphenols, hexanoates and caproates. Further, it is used as non-viral gene carrier as well as to protect tomato plants from Botrytis cinerea.
定義
ChEBI: Hexanoic acid is a C6, straight-chain saturated fatty acid. It has a role as a human metabolite and a plant metabolite. It is a straight-chain saturated fatty acid and a medium-chain fatty acid. It is a conjugate acid of a hexanoate.
製造方法
hexanoic acid is produced by fractionation of the volatile fatty acids of coconut oil.
一般的な説明
Hexanoic acid is an oily carboxylic acid found (as glycerides) in cow’s milk and some vegetable oils. It is a white crystalline solid or colorless to light yellow solution with an unpleasant odor. Insoluble to slightly soluble in water and less dense than water. Contact may severely irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. Used to make perfumes.
空気と水の反応
Slightly water soluble.
危険性
Strong irritant to tissue.
健康ハザード
Harmful if swallowed, inhaled, or absorbed through skin. Material is extremely destructive to tissue of mucous membranes and upper respiratory tract, eyes and skin. Inhalation may be fatal as a result of spasm, inflammation and edema of the larynx and bronchia, chemical pneumonitis and pulmonary edema. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.
火災危険
Special Hazards of Combustion Products: Irritating vapor may be generated.
純化方法
Dry the acid with MgSO4 and fractionally distil it from CaSO4. [Beilstein 2 IV 917.]
ヘキサン酸 上流と下流の製品情報
原材料
準備製品