What is the use of Rotavapor?

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.

Can you lose product in a rotovap?

Even if your sample stays in the flask, the chances of it spilling over when the rotation and vacuum are turned on are high. To avoid losing product, the evaporation flask that you connect to the rotovap should never be more than half full.

How long does it take to rotovap methanol?

You can use Rota vapor if you need to evaporate quickly otherwise you can put your sample in laminar hood with cap of your sample tubes open, within 24- 48 hrs. it will evaporate.

How long does it take to rotovap?

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.

How do you stop a rotovap from bumping?

To avoid “bumping”: • Do not fill your flask > ½ full. Faster spin rate usually helps. Use a moderate bath temp – too high will cause excessively fast evaporation.

Can you rotovap ether?

You can – but you needt to be VERY careful – diethyl ether is highly flammable. The flash point for either is well below zero degrees C, and the auto ignition temperature is just 160 degrees C.

What is the pressure in rotary evaporator?

b.p. (40 torr) Since the flask is rotated during the evaporation process, the surface area is larger than normal which increases the evaporation rate significantly. The solvent is collected in a flask and can properly be disposed off afterwards (organic solvent waste).

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

Evaporating Flasks, Pear-Shaped These pear-shaped evaporating flasks can be used as boiling type flasks for rotary evaporators.

Can you rotovap methanol?

In rotary evaporator, you should maintain the temperature and vacuum according to solvent. Vitor sir is right, in general 40ºC is suitable of methanol, but when its a mixture of methanol and water then approx 45-50ºC is required otherwise it takes too much time.

Can I rotovap water?

Most labs use a simple water aspirator vacuum on their rotavaps, so a rotavap cannot be used for air and water-sensitive materials unless special precautions are taken i.e. additional traps are used. In the lab, the house vacuum line, a circulation bath or a membrane pump are used as source for the vacuum (40-50 torr).