Azepane is the organic compound with the formula (CH2)6NH. It is a colorless liquid. A cyclic secondary amine, it is a precursor to several drugs and pesticides. It is produced by partial hydrogenolysis of hexamethylene diamine. Azepane is the organic compound with the formula (CH2)6NH. It is a colorless liquid. A cyclic secondary amine, it is a precursor to several drugs and pesticides. It is produced by partial hydrogenolysis of hexamethylene diamine. Like many amines, it reacts with carbon dioxide.