Method for preparing mosquito repellent by using sand ginger oil to extract waste liquid
A repellent, ginger oil technology, applied in animal repellents, botanical equipment and methods, chemicals for biological control, etc., can solve the problems of polluting the environment, harming human health, etc. harm, pollution reduction, harm reduction effect
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[0032] The present invention utilizes sand ginger oil to extract waste liquid and prepares the method for mosquito repellent, comprises the following steps:
[0033] a. extract trans-ethyl p-methoxycinnamate and cis-ethyl p-methoxycinnamate mixture from sand ginger oil extraction waste liquid, comprising the following steps:
[0034] (1) Collect the water phase distillate, which is the water phase distillate flowing out from the oil-water separator of the sand ginger oil extraction tank; or the brown yellow turbid waste liquid in the sand ginger oil extraction tank The water-phase distillate collected after redistillation; wherein the water-phase distillate flowing out of the oil-water separator of the ginger oil extraction tank is a colorless transparent liquid, which is the remaining distilled water after the ginger oil is separated, and dissolved in this water There are some volatile components of sand ginger, and its main components are trans-ethyl p-methoxycinnamate and c...
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