Cyclohexylamine Identifiers CAS number PubChem ChemSpider UNII EC number KEGG ChEBI RTECS number GX0700000 Jmol-3D images Image 1 Properties Molecular formula C6H13N Molar mass 99.17 g mol−1 Appearance clear to yellowish liquid Density 0.8647 Melting point
-17.7 °C, 255 K, 0 °F
134.5 °C, 408 K, 274 °F
Solubility in water Miscible Acidity (pKa) 10.64 Hazards S-phrases R/S statement NFPA 704 Flash point 28.6 °C (what is: /?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Cyclohexylamine, also called hexahydroaniline, 1-aminocyclohexane, or aminohexahydrobenzene, is an organic chemical, an amine derived from cyclohexane. It is a clear to yellowish liquid with fishy odor, with melting point of −17.7 °C and boiling point 134.5 °C, miscible with water. Like other amines, it is of mildly alkaline nature, compared to strong bases such as NaOH, but it is a stronger base than aniline, which differs only in that its ring is aromatic. It is flammable, with flash point at 28.6 °C. It is toxic by both ingestion and inhalation; the inhalation itself may be fatal. It readily absorbs through skin, which it irritates. It is corrosive. Cyclohexylamine is listed as an extremely hazardous substance as defined by Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act.
Cyclohexylamine is used as an intermediate in synthesis of some herbicides, antioxidants, accelerators for vulcanization, pharmaceuticals (e.g., mucolytics, analgesics, and bronchodilators), corrosion inhibitors, some sweeteners (the most notable one being cyclamate), etc. It has been used as a flushing aid in the printing ink industry.
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