Cetane

C ₁₆ H ₃₄ (226.45). _{CH 3} (CH ₂ ) ₁₄ CH ₃ . It is also called hexadecane. It is an aliphatic saturated hydrocarbon (paraffin group). Of alkanes with 16 carbon atoms, the straight-chain ones are specifically called cetane. In contrast to its isomer, it is also called normal hexadecane or n -hexadecane. It is contained in crude oil. It is produced by reducing cetyl iodide in ethanol or acetic acid with zinc and hydrochloric acid, by heating palmitic acid with hydrogen iodide and red phosphorus, or by fractional distillation from diesel fraction. It is a colorless crystalline solid at low temperatures and a colorless liquid at room temperature. Its melting point is 16.17 °C, and its boiling point is 286.79 °C. Its viscosity is 0.76996 and 1.43250. It is soluble in ethanol, acetone, and ether, but insoluble in water. It is a standard fuel (cetane number = 100) for measuring the cetane number, which indicates the ignition ability of diesel fuel, and is an excellent component of diesel fuel. It is also used as a solvent. [CAS 544-76-3]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

C₁₆H₃₄(226.45)．CH₃(CH₂)₁₄CH₃．ヘキサデカンともいう．脂肪族飽和炭化水素(パラフィン族)の一つ．炭素数16のアルカンのうち，直鎖状のものをとくにセタンという．異性体と対比して正ヘキサデカン，n-ヘキサデカンともよばれる．原油に含まれる．製法は，ヨウ化セチルをエタノールまたは酢酸中で亜鉛と塩酸を用いて還元するか，パルミチン酸をヨウ化水素と赤リンとともに加熱する方法と，軽油留分から分留する方法とがある．低温では無色の結晶性固体，常温では無色の液体．融点16.17 ℃，沸点286.79 ℃．0.76996．1.43250．エタノール，アセトン，エーテルに可溶，水に不溶．ディーゼル燃料の発火性を示すセタン価を測定するための標準燃料(セタン価 ＝ 100)であり，すぐれたディーゼル燃料の一成分である．ほかに溶剤としても用途がある．[CAS 544-76-3]

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