1-Octadecylamine

1-Octadecylamine (CAS 124-30-1) is a long-chain primary fatty amine derived from stearic acid, commercially available under trade names including Alamine 7, Alamine 7D, Adogenen 142, and stearamine. It carries no assigned E-code. The compound belongs to the aliphatic amine category with the molecular formula C18H39N.

In textile and polymer processing, 1-octadecylamine functions as an antistatic agent by orienting its polar amine group toward charged surfaces while the C18 hydrocarbon tail reduces surface resistivity. In metalworking lubricants, it adsorbs onto metal surfaces through nitrogen coordination, forming a protective boundary film that reduces friction and wear. It also serves as an emulsifier in hair conditioning formulations, where it stabilises oil-in-water systems through electrostatic interaction with anionic components.

1-Octadecylamine is supplied as white prills and is subject to REACH registration requirements within the EU. Procurement should confirm technical or cosmetic grade depending on application, and verify supplier Safety Data Sheets for compliance with CLP classification. The HS code for customs purposes is 29211980.