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Introduction

Some compounds have very high boiling points.To boil such compounds,it is preferred to reduce the pressure at which the compound boils rather than increase the temperature.Once the pressure is reduced to the vapor pressure of the compound(at a certain temperature),the compound begins to boil and the distillation can proceed.This technique is known as vacuum distillation and is commonly found in laboratories in the form of vacuum vaporizers.This technique is useful for compounds whose boiling point exceeds their decomposition temperature at atmospheric pressure,and attempts to boil such compounds at atmospheric pressure will cause them to decompose.

Use

1.When installing the vacuum distillation instrument,you must select a rubber stopper of the appropriate size,preferably a grinding vacuum distillation unit.

2.Distillate contains a large amount of low-boiling substances,which must be distilled under normal pressure to distill most of the anti-mesh,and then distilled under reduced pressure with a water pump to remove low-boiling substances.

3.Stop heating,recover low-boiling substances,and check the connection of each part of the instrument to make it close.

4.Turn on the oil pump,then slowly close the safety valve and observe if the pressure on the pressure gauge reaches the requirement.If the requirement is not met,the safety valve can be used for adjustment.

5.When the pressure reaches a constant level,start heating the distillation bottle.When rectifying the monomer,a small amount of zeolite should be added to the distillation flask(usually an oil bath is used,and the temperature is higher than the boiling point of the distillate by 20 to 30 °C.The volatile high boilers can be 30 to 50 °C higher in the later stage.6.After the distillation is finished,remove the heat source first,wait a little colder,and then gradually open the safety piston.When the balance of the mercury column in the pressure gauge drops,stop pumping.After the pressure is balanced inside and outside the system,remove the instrument and clean it.

Our advantages

1.Short Delivery time:We do our best to produce products for you,generally takes about 60 days,we can delivery soon.

2.Safe packing:We will pack your products and minimize the possibility of damage.Finally be packed with seaworthy package or in wooden case.

3.Best after-sale service:Over 60% products are sold to the Southeast Asia,Middle East and Europe,and all products are trusted by domestic and foreign customers.

Our technicians have both research and development capabilities and rich practical experience in production, which can ensure that our Glass Distillation Machine, Re 501 5L Rotary Evaporator, Small Vacuum Distillation Unit meets high standards. Owning to latest technologies, we facilitate our clients with custom made creation facility. Fast, efficient, and keeping promises are our corporate style.

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