Method of preparing mosquito repellant by utilizing cassia oil extraction waste liquid
The invention discloses a method of preparing mosquito repellant by utilizing cassia oil extraction waste liquid, and relates to a method for preparing the mosquito repellant. The method comprises firstly extracting a mixture of trans cinnamaldehyde and cinnamic acid from the cassia oil extraction waste liquid, then mixing 20 40 parts of the mixture of trans cinnamaldehyde and cinnamic acid, 3 5 parts of octadecanol, 10 30 parts of oil tea camellia seed oil, 3 5 parts of polyoxyethylene sorbitan monooleate, 1 3 parts of sorbitan monopalmitate, 30 50 parts of pine needles hydrosol, 2 10 parts of propylene glycol, and 0.5 1 part of pyrrolidone 5 carboxylic acid sodium salt, and performing emulsion so as to prepare the mosquito repellant. The method is simple in operation, and helps to reduce environment pollution and reduce damage to human. The prepared product is capable of effectively preventing mosquitoes, and is low in cost and beneficial for popularization and usage.