These surfactants are made by reacting an ethanolamine with a fatty acid obtained from either synthetic petroleum sources or natural vegetable oils.(Most fatty acids are produced synthetically as this method is currently less expensive.) Fatty acid alkanolamides can react with materials in the environment to form nitrosamines (see diethanolamines above). Found in: Shampoos and conditioners, liquid cleansers, and polishes.
Amines are major industrial commodities used in making rubber, dyes, pharmaceuticals, and synthetic resins and fibres and in a host of other applications.