Piperidine

Hexahydropyridine. C ₅ H ₁₁ N (85.15). Also called azacyclohexane. It is produced by catalytic reduction of pyridine or by distillation of pentamethylenediamine hydrochloride. It is a colorless liquid with an ammonia odor. Its melting point is -13 °C, its boiling point is 106 °C. Its pH is 0.8622 and 1.4534. p K _a is 11.2 (25 °C). It is soluble in water and organic solvents. It is strongly alkaline and absorbs carbon dioxide from the air. It is flammable. It is toxic if inhaled through the skin or mouth. It is used as a solvent, epoxy resin hardener, organic synthesis, and pharmaceutical raw material. [CAS 110-89-4]

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

hexahydropyridine．C₅H₁₁N(85.15)．アザシクロヘキサンともいう．ピリジンを接触還元するか，ペンタメチレンジアミンの塩酸塩を蒸留してつくる．アンモニア臭のある無色の液体．融点－13 ℃，沸点106 ℃．0.8622．1.4534．pK_a 11.2(25 ℃)．水，有機溶媒に可溶．強塩基性があるので空気中の二酸化炭素を吸収する．引火性がある．皮膚や口からの吸入は有毒．溶剤，エポキシ樹脂の硬化剤，有機合成，医薬原料に用いられる．[CAS 110-89-4]

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