Ethyl cinnamate preparation of oil droplets due to uneven mixing of reactants, poor temperature control, too much water, inadequate mixing, the specifics are as follows:

1, uneven mixing of reactants: uneven mixing of reactants will lead to some of the reactants can not be sufficiently contacted, resulting in the formation of oil droplets.

2, poor temperature control: the reaction temperature has a greater impact on the preparation of ethyl cinnamate, the temperature is too high or too low, will lead to the reactants can not be fully reacted, thus forming oil droplets.

3, too much water: the preparation of ethyl cinnamate requires the addition of catalyst, the presence of water in the reaction process will destroy the catalyst, resulting in a reduction in the reaction rate, resulting in the formation of oil droplets.

4, inadequate mixing: inadequate mixing will lead to the reactants are not fully mixed, so that some areas of local overdensity, causing side reactions, resulting in oil droplets.