FOREST FIRE EXTINGUISHANT AND MANUFACTURING METHOD

A manufacturing method of a forest fire extinguishant is provided to manufacture eco-friendly forest fire extinguishant by selecting various additives and biodegradable surfactants and performing the mixing text thereof. A manufacturing method of a forest fire extinguishant includes the steps of: obtaining an aqueous solution containing surfactant by adding purified water to surfactant and stirring the mixture thereof; and adding the mixture containing sodium phosphate, urea and citric acid into the aqueous solution containing surfactant, stirring them and then cooling the mixture. In the first step, the purified water in an amount of 1/4 to 1/2 of the amount of the surfactant is added to the surfactant, and is heated for 20 to 40 minutes at 45 to 55 deg.C to obtain the aqueous solution containing the surfactant.