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The definitions of emulsify, emulsifier, emulsion and emulsification

March 25, 2013


When two liquids of different thicknesses emulsify or when they are emulsified, they combine to become one single smooth substance.

These two liquids are naturally insoluble, such as oil and water.

Emulsify is a word describing a physical reaction. Two or more substances (generally liquids) are emulsified by a high speed physical force such as mixing, blending, dispersing and homogenizing.


Emulsifier has two meanings. From formula angle, emulsifier is a surface-active agent used in food, cosmetics, pharmaceuticals and chemicals manufacturing which helps to combine liquids of different thicknesses.

It prevents oil and water separating and promotes the formation and stabilization of an emulsion.

From mechanical angle, emulsifier is an emulsifying machine used to emulsify the two or more liquids such as oil and water. Generally an emulsifier machine has equipped with vacuum system to be a vacuum emulsifier.

Rotor and stator type batch homogenizer or inline homogenizer is the heart of an emulsifier machine. High speed dispersers are sometimes used in an emulsifier machine, too.


An emulsion is a liquid or cream which is a mixture of two or more liquids, such as oil and water, which do not naturally mix together. Emulsion is made by emulsifier machines.

Emulsions are part of a more general class of two-phase of multi-phase systems of matter called colloid. One phase is broken in small droplets inside the continuous phase. Due to the agent of emulsifier, emulsion keeps stable and oil and water won’t separate.

The most common emulsion is cream and lotion which we may use everyday.


Emulsification is the process of forming emulsions of two liquids, such as water and oil. Emulsifying machine or emulsifier machine is used in the emulsification process.

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