|
|Section2= |Section3= }} 1-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). It has a cetane number of zero, and was previously used as the lower reference for cetane number. However, due to the expense and handling difficulty of 1-Methylnaphthalene, it was replaced in this capacity by isocetane, with a CN of 15.〔(Cetane number )〕 On February 22, 2014, NASA announced a greatly upgraded database for detecting and monitoring PAHs, including 1-Methylnaphthalene, in the universe. According to NASA scientists, over 20% of the carbon in the universe may be associated with PAHs, possible starting materials for the formation of life.〔 PAHs seem to have been formed shortly after the Big Bang, are abundant in the universe, and are associated with new stars and exoplanets.〔 == See also == * List of interstellar and circumstellar molecules 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1-Methylnaphthalene」の詳細全文を読む スポンサード リンク
|