The method of making ethyl acetate
If you want to make ethyl acetate, you need to understand the reason and follow the method before you can get it.

First, prepare the material
to make ethyl acetate, the first raw material. It is necessary to prepare acetic acid and ethanol, both of which are pure and good, and the reaction is easy if there are few impurities. And the amount of the two should be prepared in proportion. Usually, the molar ratio of acetic acid to ethanol is about 1:1.1 - 1:1.5. A catalyst is also required. Sulfuric acid is commonly used, which can promote the reaction to go quickly. The amount of sulfuric acid should be small, generally accounting for 1% - 3% of the reaction mixture, and too much is prone to side reactions.

Second, the device
is the second device. Take the round bottom flask, wash and dry it to prevent moisture from disturbing it. Fix it on the iron frame, the mouth of the bottle is equipped with a double-hole rubber plug, and a thermometer is inserted to make the mercury ball enter the liquid surface to measure the reaction temperature; a drop funnel is inserted for adding liquid. Then connect the spherical condenser tube to make the steam condense and flow back to reduce the volatilization of raw materials and products. Water enters the lower mouth of the condenser tube and comes out of the upper mouth to ensure its cooling effect. The end of the device is connected to the receiving bottle, and the obtained ethyl acetate is collected.

3. At the beginning of the operation
operation, first add ethanol to the round bottom flask, slowly inject sulfuric acid, and shake while adding to make the mixing smooth and prevent local overheating. Then the acetic acid is slowly dripped into the drip funnel, and the dripping speed should be slow to avoid overreaction. Heat the flask and gradually raise the temperature to 110-120 ° C. At this temperature, acetic acid and ethanol are easy to form esters. During the reaction, closely observe the temperature and dripping speed.

Fourth, separate
After the reaction is completed, the product is mixed with unreacted raw materials, catalysts and water. First move the reaction liquid to the separation funnel and let it stand for layering. Ethyl acetate has a density less than water and floats on the upper layer. Carefully separate the upper liquid to obtain a crude product. The crude product still contains impurities and needs to be refined. Wash it with saturated sodium carbonate solution to remove acetic acid; then wash it with saturated salt water to remove sodium carbonate; then dry it with anhydrous magnesium sulfate to remove water. Finally, distill and collect the fraction at 74-78 ° C to obtain pure ethyl acetate.

To make ethyl acetate, although there are regulations, you need to pay attention to the details between operations, so that you can get a good product.