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6-Aminohexanenitrile is a compound useful in organic synthesis and other chemical processes.

The Journal of Organic Chemistry, 46, p. 1263, 1981 DOI: 10.1021/jo00320a008

When 6-amino capronitrile is produced by partial hydrogenation of adiponitrile, hexamethylenediamine and tetrahydroazepine (THA) are also coproduced. The hexamethylenediamine can be easily removed from the mixture by simple distillation. The process for the recovery of 6-amino capronitrile from a mixture containing 6-amino capronitrile and THA which comprises (a) heating said mixture at a temperature about 235 ℃, to convert THA to higher boiling compounds; (b) then distilling the 6-amino capronitrile from the resulting mixture.