What is the use of Rotavapor?

What are Rotary Evaporators? A rotary evaporator (also called as “rotavap” or “rotovap”) is a device used in labs for the efficient and gentle removal of solvents from samples by evaporation.

What is the principle of rotary evaporator?

The rotovap works by increasing the rate of evaporation of the solvent by (1) reducing the pressure to lower the solvent boiling point, (2) rotating the sample to increase the effective surface area and (3) heating the solution.

What are the main components of a rotary evaporator?

The main components of a rotary evaporator are:

  • A motor unit that rotates the evaporation flask or vial containing the user’s sample.
  • A vapor duct that is the axis for sample rotation, and is a vacuum-tight conduit for the vapor being drawn off the sample.

What can be used instead of rotary evaporator?

All Answers (7) You can simulate a rotary evaporator by monting a system compraised of an erlenmeyer over a hot plate magnetic stirrer or a heated ballon, conected to a inclined condenser.

How much is rotary evaporator?

Rotary Vacuum Evaporator at Rs 42000 | Rotary Evaporator | ID: 10166675648.

What is boiling point of DMF under vacuum?

Solvents with higher boiling points such as water (100 °C at standard atmospheric pressure, 760 torr or 1 bar), dimethylformamide (DMF, 153 °C at the same), or dimethyl sulfoxide (DMSO, 189 °C at the same), can also be evaporated if the unit’s vacuum system is capable of sufficiently low pressure.

How do you evaporate a solvent?

Solvent can be evaporated by placing the solution in an open container (an Erlenmeyer, evaporating dish, beaker, vial). The container is set on a heat source (steam bath, hot plate, heating mantle, sand bath) and the solvent boiled off. (If the solvent is water, use a heat source other than a steam bath.)

Why is rotary evaporation efficient?

Decreased Pressure Within the System This decreases the vapor pressure required for boiling to occur, thus lowering the boiling point of the solvent. This means less heat energy is needed for it to evaporate. Aside from lowering the boiling point, a lower pressure can speed up the rate of evaporation.

What types of glassware can be used on a rotary evaporator?

What types of glassware can be used on a rotary evaporator? Round bottom flasks and Florentine flasks, both of which are essentially spherical, are suitable for smooth swirling of the liquid by the rotation of the rotor. A pear shaped flask may also be used.

Why are rotary evaporators better?

Removal of solvent by a rotary evaporator is superior to evaporation under atmospheric pressure for many reasons. The process is much quicker (often takes less than 5 minutes), uses lower temperatures (so decomposition is unlikely), and uses less energy than boiling with a heat source.