It is not so simple as previously indicated. From a Clevenger distillation normally is obtained a mixture of water/oil with a huge quantity of water. May be the oil is not visible on the surface as a separated phase (hydrolate). This depends on the quantity of oil contained in the plant material. In these conditions you should add a very high quantity of sodium sulfate to obtain dryness.

For a low quantity of oli it should be better to extract the water/oil mixture with a suitable organic solvent (chloroform,  diethyl ether, ethyl acetate) and then dry the organic solution with sodium sulfate. After filtration and evaporation of the solvent at reduced pressure you will obtain the dryed oil.

If the amount of water is very less you can dry it by applying suitable amount of sodium sulfate. However, if the amount of water is more in oil or your oil is miscible in water you can just extract it with organic solvents such as hexane, diethyl ether, chloroform or Ethyl acetate dry it with sodium sulfate and evaporate the respective solvents under reduced temperature and pressure you will get your dried oil.

With best wishes!

Usually after 2 to 5 hours of essential oils extracted water distillation was diagnosed the volume of does not change the essential oil will stop distillation and low anhydrous (Na2So4) for water absorption and low moisture essential oils to add essential oils and liquid essential oils from cotton filter will pass (Na2So4) with water absorption become the hard material and as a white powder remain a bottom of the beakers as a white powder and finally, we wash it with a little hexane and the essential oils container containing is discharged. Essential oil in a dark container and cover it cloze then and keep at a temperature of 2 to 4 ° C.

Good luck

Thank you all for attention and providing such wonderful explanations

I got the results.

Best Regards

Mohammad Tahmasebi

Simply add anhydrous sodium sulphate and stir vigorously.