Mass Transfer
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

Distillation
Evaporation
Liquid extraction
Absorption

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Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

One of the liquid components is heat sensitive
One of the liquid components has very high affinity towards the solvent
Viscosity of liquid components is very high
Extracting solvent is cheaply & abundantly available

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