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What are the reaction vessels and what are the specific types?
Nov 02, 2018

The reaction vessel, literally, is a container for carrying out various reactions, and these are collectively referred to as reaction vessels. Then, what is the specific definition and what is specific, the following will be explained and explained one by one, so that everyone has the content of learning, and then, know what is the reaction container.


The reaction vessel, which is explained from a professional point of view, refers to a vessel used to complete the physical or chemical reaction of the medium, and is used in a large number of industries and fields such as chemical, pharmaceutical, fertilizer, and refining. All kinds of processes need to be used. Therefore, it is widely used.


The reaction container, which is a specific type, has a test tube, an evaporating dish, a crucible, a burning spoon, etc., but there are some specific classifications. If it is divided from the angle of heating, it can be divided into two categories, one type It is an instrument that can be heated but must be covered with asbestos net. It is a beaker, a flask, a conical flask, etc., which cannot be heated. It is a gas cylinder, a funnel, etc.


Reaction vessel specific type 1: test tube

Test tube, which is a common and commonly used type of reaction container, its main purpose is:

Use 1: Under normal temperature or heating, use a small amount of reagent and carry out some reactions.

Use 2: It is used to collect a small amount of gas and purify and purify the gas. In addition, it can also be used to hold a small amount of medicine.

When using a test tube, there are some precautions that are:

(1) It can be directly heated. It is necessary to use a test tube clamp to clamp the test tube, but it must be placed from the bottom to the top, and the clamped portion is 1/3 from the test tube.

(2) Before the test tube is heated, there should be no water droplets on the outer wall. After heating, it should not be quenched to prevent the test tube from rupturing and cannot be used.

(3) When the test tube is heated, it should be evenly heated, and then concentrated and heated. Remember that the test tube mouth cannot face anyone, so as not to injure people. In addition, when heating the solid, the test tube is placed horizontally, the nozzle is slightly inclined downward, and the solid is laid flat on the bottom of the test tube. If it is heated, it should be stolen, and the test tube should be at a 45 degree angle to the table top.

(4) Strong alkaline substances such as NaOH cannot be heated in a test tube.


Reaction vessel specific type 2: crucible

crucible, it is mainly used for high temperature burning of solid materials. Its precautions in use and use are:

(1) Heat the crucible directly on the mud triangle on the tripod, but avoid sudden cooling.

(2) When handling the sputum or sputum cover, the special tool of the tongs should be used instead of directly by hand, which will cause burns.

(3) The cooling of the crucible can be carried out in a desiccator or on an asbestos web.

(4) In the enamel material, it should be determined according to different substances. If it is a strong alkaline corrosive substance, porcelain crucible should be used; if it is a strong alkaline substance such as NaOH, iron crucible should be used.

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