Ethyl acetate

One of the ethyl acetates

Chemical formula CH3COOC2H5. Also known as "ethyl acetate", it is a colorless, aromatic liquid with a boiling point of 77°C, a melting point of -83.6°C, and a density of 0.901g/cm3. It is soluble in ethanol, chloroform, ether and benzene, etc. It is prone to hydrolysis and saponification reactions. Combustible, its vapor and air form explosive mixtures. It is used as a solvent in the perfume and paint industries and is also an important raw material for organic synthesis.

Ethyl acetate bis

(CH3COOC2H5) is a colorless liquid with a fruity aroma. Boiling point 77℃. It is miscible with alcohol ethers, slightly soluble in water, and lighter than water. It is flammable and hydrolyzes with water into corresponding alcohols and acids under certain conditions. When heated under dilute sulfuric acid conditions, a reversible reaction occurs to form ethanol and acetic acid. The reaction is not complete. When heated in sodium hydroxide solution, the hydrolysis is quite complete, producing sodium acetate and ethanol. Mainly used as solvent for paints, coatings, nitrocellulose, resins, etc. In the laboratory, ethanol and acetic acid are heated under the action of water absorption and catalysis by concentrated sulfuric acid. The reactor is usually a flask or test tube with a reflux device, and a condenser tube is used to evaporate the ethyl acetate. A saturated sodium carbonate solution is placed in the receiver to remove the acetic acid mixed in the ester and reduce the solubility of the ester in water. Industrially, it is also produced by acetaldehyde condensation method. A catalyst and cocatalyst are needed to generate 1 molecule of ethyl acetate from 2 molecules of acetaldehyde.

Ethyl Acetate Terter

Colorless, volatile, neutral flammable liquid with fruity odor. The melting point is -83.6℃, ??the boiling point is 77.06℃, the relative density is 0.9003, and it is slightly soluble in water.

Ethyl acetate has the general properties of ester. It is mainly synthesized from ethanol, acetic acid, acetic anhydride, etc. The esterification reaction of ethanol and acetic acid is a reversible equilibrium reaction with a very slow rate. Adding a small amount of acid as a catalyst can speed up the equilibrium rate. The equilibrium constant K of this reaction is 4. It can be seen from calculation that only 66% of the alcohol and acid are esterified at equilibrium. In order to make the reaction proceed to the end, the equilibrium can be shifted to the right by increasing the concentration of one of the reactants or removing the product water. Yield.

Ethyl acetate is widely used in varnish, nitrocellulose, coatings and organic synthesis solvents. In addition, it can also be used in the manufacture of artificial flavors, spices, artificial leather, etc.