n-ドコサン 化学特性,用途語,生産方法
外観
白色～ほとんど白色, 結晶～結晶性粉末又は塊
定義
本品は、次の化学式で表される飽和直鎖アルカンである。
溶解性
熱エタノール, エーテル, アセトンにやや可溶。
用途
ガスクロマトグラフィーにおける内部標準物質、炭化水素分析標準。
化粧品の成分用途
エモリエント剤
化学的特性
colourless crystalline solid
使用
It is employed as a perfuming agent in cosmetics industry. It is also used in organic synthesis, calibration, and temperature sensing equipment. Docosane is used to investigate commercially available waxes in the form of thin disc samples as possible diffraction intensity standards for macromolecular crystallography synchrotron beamlines.
主な応用
Docosane (C
22H
46) is a long-chain alkane that can be used as an organic phase-change material for thermal energy storage. Pure docosane has a high latent heat of 256.1 J/g, but its thermal conductivity is relatively low, at only approximately 0.2–0.3 W/(m·K), which limits the rate of heat exchange during the thermal storage process. When combined with sponge-like graphene, both its latent heat (262.8 J/g or 262.2 J/g) and thermal conductivity (0.59 W/(m·K)) are enhanced. This composite material can be utilised in solar thermal energy storage systems as a phase-change thermal storage medium with high energy density and rapid thermal response
[1].
一般的な説明
Solid. Insoluble in water. Used in organic synthesis, calibration, and temperature sensing equipment.
空気と水の反応
Insoluble in water.
反応プロフィール
Saturated aliphatic hydrocarbons, such as N-DOCOSANE, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. When heated sufficiently or when ignited in the presence of air, oxygen or strong oxidizing agents, they burn exothermically to produce carbon dioxide and water.
純化方法
Crystallise docosane from EtOH or ether. [Beilstein 1 IV 572.]
n-ドコサン 上流と下流の製品情報
原材料
準備製品