オクタデカン [標準物質]

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H304：飲み込んで気道に侵入すると生命に危険のおそ れ

• 注意書き

  P301+P310：飲み込んだ場合：直ちに医師に連絡すること。

  P331：無理に吐かせないこと。

  P405：施錠して保管すること。

  P501：内容物/容器を．．．に廃棄すること。

オクタデカン [標準物質] 価格

オクタデカン [標準物質] 化学特性,用途語,生産方法

• 外観

  白色/無色～ほとんど白色/ほとんど無色粉末～塊～透明液体

• 外観

  白色～ほとんど白色粉末～塊

• 定義

  本品は、飽和直鎖アルカンであり、次の化学式で表される。

• 溶解性

  エーテル, アセトンに易溶。エタノール及びアセトンに溶ける。

• 化粧品の成分用途

  エモリエント剤、溶剤、香料

• 化学的特性

  white crystals or powder

• 使用

  n-octadecane is used as a solvent, a lubricant, transformer oil and an anti-corrosion agent. It is also used in paraffin and as a chemical intermediate in organic synthesis. It plays an important role in pheromones as a chemical messenger. N-Octadecane/ molecular sieve 5A composites find application as thermal storage material.

• 定義

  ChEBI: A straight-chain alkane carrying 18 carbon atoms.

• 一般的な説明

  Colorless liquid.

• 反応プロフィール

  Saturated aliphatic hydrocarbons, such as Octadecane, 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.

• 火災危険

  Combustible.

• 純化方法

  Crystallise it from acetone and distil it from sodium in a vacuum. [Beilstein 1 IV 553.]

• Properties and Applications

  Octadecane (n-Octadecane) is part of the paraffin family; its chemical formula is C₁₈H₃₈, and it is a solid at room temperature. Its melting point lies between 28 and 30 °C, its heat capacity is 2.22 J/K·g, and its viscosity is 4.21 mPa·s (20 °C). During the phase transition, the thermal conductivity changes from 0.198 W/m·K (solid) to 0.222 W/m·K (liquid). Octadecane can be used as a phase-change material (PCM) to prepare novel phase-change composites suitable for building cooling applications. Recycled aluminium was added to these composites at concentrations of 7% and 7.5% (by volume) as a thermal conductivity enhancer to prevent sinking during the molten phase and to improve thermal conductivity. Furthermore, research has shown that, compared to octadecane, the addition of aluminium shavings can increase the thermal conductivity of the composite by 100% (octadecane-short aluminium) and 600% (octadecane-long aluminium), whereas the mass increase remains relatively low^[1].

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