Tri-n-hexylamine is used as an extractant during isolation and purification of succinic acid from an escherichia coli fermentation broth in pharmaceutical industry. It is also used as an internal standard in screening of human hair specimens for designer drugs by ion mobility spectrometry. Further, it is involved in the synthesis of zinc oxide nanorods. In addition to this, it is used in the preparation of infrared luminescence nanohybrid films.