A perfect distillation occurs slowly enough to ensure all vapours condense into liquid. It is important for obtaining the maximum purification and separation.
PROCESS STEPS FOR A PERFECT DISTILLATION
• Heat slowly
Heat the distillation flask slowly until the liquid boils.
• Maintain a constant temperature
Once the first few drops of liquid fall, the temperature should remain relatively constant.
• Distil slowly
The distillation rate should be slow and constant. A rate of one milliliter per minute or slower is recommended.
• Use a Reflex column
The column should be positioned vertically so that the condensed liquid can percolate down through the rising vapours.
• Use Copper Mesh for packing material
Packing material with a high surface area provides a surface for condensation to occur.
Factors that affect distillation
• Distillation rate
The distillation rate affects the number of vaporization and condensation cycles, which in turn affects purification.
• Pressure
The pressure at which the distillation is performed can affect the boiling point of the compound.
• Temperature
The temperature at which the distillation is performed can affect the stability of the compound and the safety of the process.
• Raw materials
The quality of the raw materials used in the process can affect the final product.
