emulsoid

At the same time, a given liquid may form a true emulsoid when introduced into one other liquid and a true solution when introduced into another.

Many common chemical reactions, if carried out in very dilute solutions, result in the production of sols, especially if a small amount of some emulsoid is present in the reacting mixture; sols produced in this way are very stable, and the emulsoid which is used in stabilizing the sol is known as a "protective colloid."