Name the substances which are added to stabilizes the emulsions.

The substances which are added to stabilize the emulsions are called an emulsifying agent.


What is Emulsion?

An emulsion can be defined as a colloid consisting of two or more non-homogenous types of liquids wherein one of the liquids contains the dispersion of the different forms of liquids.

Properties Of Emulsions

  • Emulsions contain both continuous and dispersed, with the boundary coming between the phases that are called “interface”.
  • Emulsions have a cloudy appearance due to many phase interfaces scattering light passing through the emulsions.
  • Emulsions appear in white colour when the light is dispersed in equal proportions.
  • If the emulsion is dilute, then higher-frequency and the low-wavelength type of light will be scattered in more fractions,

 The various characteristics of emulsifiers are given below:

  • They are substances that have a hydrophilic end (polar) as well as a hydrophobic end (non-polar).
  • They are soluble in both water and oil.
  • Emulsifiers form a layer between the dispersed phase and the dispersion medium, thereby preventing the dispersed phase particles to come together to form larger particles and separating out.
  • Emulsifiers can be cationic, anionic or even non-polar.
  • It is not just the percentage of water and oil that decides whether it is oil-in-water or a water-in-oil emulsion. On the other hand, it depends on which among water and oil can solvate the emulsifier to a larger extent.
  • If the emulsifier is more soluble in water then the water becomes the dispersion medium and oil becomes the dispersed phase and hence we get oil in water emulsion.

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