Precautions for using a three necked flask

Sealing of frosted interface: Ensure good sealing at the interface to prevent leakage.
Liquid capacity limit: The injected liquid should not exceed 2/3 of the flask volume.
Supporting equipment: It needs to be used in conjunction with rubber plugs, conduits, condensers, etc. during distillation or fractionation.
Heating method: If using an open flame for heating, it should be heated evenly on asbestos mesh; There should be no water droplets on the outer surface of the flask during heating.
Safety protection: When conducting high-temperature heating, it is important to use appropriate heating equipment, control the heating temperature, and avoid the flask from breaking; Appropriate protective equipment should be worn during the operation, such as gloves, goggles, etc

A three necked flask is typically used in the following situations:

Liquid solid or liquid to liquid reactors: suitable for laboratory organic substance synthesis reactions.
Assembly of gas reaction generator: can be used for experiments under normal temperature and heating conditions.
Distillation or fractionation of liquids: using a flask with a branch tube, also known as a distillation flask.
Performing complex boiling, fractionation, and purification operations: often used in conjunction with thermometers, condenser tubes, stirring rods, etc