Triazine

C ₃ H ₃ N ₃ (81.08). A heterocyclic 6-membered ring consisting of 3 N atoms and 3 C atoms. There are three isomeric structures, of which 1,3,5-triazine is the most widely studied, and the others are of little importance. 1,3,5-triazine is obtained by the reaction of formamidine hydrochloride with sodium diformamide. It is a volatile solid. Its melting point is 86 °C, boiling point is 114 °C. It is soluble in ethanol and ether. When it is dropped onto water, it exhibits the Leidenfrost phenomenon, or camphor dancing, due to its high vapor pressure and surface tension. 1,2,4-triazine is a pale yellow oily substance. Its melting point is 16-17.5 °C, boiling point is 156 °C. Its molecular weight is 1.5149. 1,2,3-triazine is a plate-like crystal. Its melting point is 69.5-71 °C.

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

C₃H₃N₃(81.08)．N原子3個とC原子3個からなる複素六員環をいう．次の3種類の異性構造があるが，1,3,5-トリアジンがもっともよく研究されていて，そのほかはあまり重要ではない．1,3,5-トリアジンはホルムアミジン塩酸塩とジホルムアミドナトリウムとの反応で得られる．揮発性固体．融点86 ℃，沸点114 ℃．エタノール，エーテルに可溶．水の上に落とすと，その高い蒸気圧と表面張力によるライデンフロスト現象(Leidenfrost phenomenon)すなわちショウノウ踊り(camphordancing)を呈する．1,2,4-トリアジンは淡黄色の油状物質．融点16～17.5 ℃，沸点156 ℃．1.5149．1,2,3-トリアジンは板状晶．融点69.5～71 ℃．

出典　森北出版「化学辞典（第2版）」化学辞典 第2版について　情報