Difference between volatile oil and fixed oil?

Answer 1

volatile oils:-

1. These are volatile at room temperature & are usually obtained by distillation.
2. When evaporate do not leave any spot.
3. These cannot be saponified.
4. These are mixtures of cleoptenes & stearoptenes.

Fixed oils:-

1. Non volatile at room temp & can be obtained by special extraction process.
2. These leave spot after evaporation.
3. These can be saponified.
4. These are esters of higher fatty acids & glycerin.