1, the production process is different: methyl acetate is obtained by the reaction of methanol and acetic acid under the action of catalyst, and the reaction conditions are harsh and need to be carried out at high temperature and high pressure. Crude methyl acetate is obtained from methanol and acetic acid under mild reaction conditions, and generally does not need high temperature and high pressure.
2. Different purity: the purity of methyl acetate is higher than that of crude methyl acetate, which can generally reach more than 99%, and it has high chemical purity. However, the purity of crude methyl acetate is low, generally about 95%, and it contains some impurities, such as acetic acid, methanol, water and so on.
3. Different uses: Methyl acetate is generally used as a solvent and intermediate in organic synthesis, such as preparing some chemicals such as drugs and spices. Crude methyl acetate is mainly used to prepare some industrial raw materials such as resins, coatings and plastics, and can also be used to produce some flavors and fragrances.