アラキジン酸 化学特性,用途語,生産方法
外観
白色～ほとんど白色, 結晶～結晶性粉末
定義
本品は、次の化学式で表される脂肪酸である。
溶解性
水に殆ど不溶。エーテル, 熱エタノールに可溶。エタノール, アセトンに難溶。エタノールに溶けにくく、水にほとんど溶けない。メタノール、エタノール、アセトン、石油ナフタに難溶。エーテル、クロロホルム、熱エタノールに可溶。
解説
イコサン酸，イコサンサン，エイコサン酸ともいう．炭素数20の飽和直鎖脂肪酸．動物，植物油中にグリセリドの形で含まれている．アラキドン酸を還元しても得られる．融点75.5 ℃，沸点328 ℃(一部分解)，205 ℃(13 Pa)，d41000.8240．水，アセトンに難溶，エーテル，クロロホルム，熱エタノールに可溶．
用途
機器分析の標準。
化粧品の成分用途
不透明化剤、洗浄剤
化学的特性
Arachidic acid is also known as eicosanoic acid or Icosanoic acid, formula CH3(CH2)18COOH. A widely distributed, but minor, component of the fats of certain edible vegetable oils. Shining, white crystalline leaflets; soluble in ether, slightly soluble in water. Decomposes at 328 C. Commercial product derived from groundnut (peanut) oil. Used in organic synthesis, lubricating greases, waxes, and plastics. Source of arachidyl alcohol.
天然物の起源
Arachidic acid is a saturated long-chain fatty acid and a minor constituent of peanut oil, coconut oil and corn oil.
使用
Arachidic acid is used in the manufacture of pharmaceuticals, soaps, cosmetics, and food packaging because of its surfactant-like properties. Arachidic acid was also used for the dispersion of the monolayer. By addition of an appropriate amount of arachidic acid to a solution of [Eu(tta)3(phen)] in chloroform, stable monolayers consisting of [Eu(tta)3(phen)] and arachidic acid were obtained, and the [Eu(tta)3(phen)] were found to be dispersed homogeneously in the monolayer.
定義
ChEBI: Icosanoic acid is a C20 striaght-chain saturated fatty acid which forms a minor constituent of peanut (L. arachis) and corn oils. Used as an organic thin film in the production of liquid crystals for a wide variety of technical applications. It has a role as a plant metabolite. It is a straight-chain saturated fatty acid and a long-chain fatty acid. It is a conjugate acid of an icosanoate.
製造方法
Eicosanoic acid is produced by catalytic hydrogenation of arachidonic acid. Arachidonic acid is obtained from food or by desaturation and chain elongation of the plant-rich essential fatty acid, linoleic acid.
反応性
It has the properties of fatty acids, can react with NaHCO3 to form salts, and with alcohols to form esters and so on.
純化方法
Crystallise the C20 acid pKEst ~ from absolute EtOH. [Beilstein 2 IV 1276.]
アラキジン酸 上流と下流の製品情報
原材料
準備製品