The invention discloses environment-friendly degreasant for automobile
coating and an application method of the environment-friendly degreasant. The environment-friendly degreasant comprises alkaline matter, an auxiliary
cleaning agent, a chelating agent, surfactant and 34%-77% of deionized water. The alkaline matter comprises, by weight, 5%-20% of
sodium hydroxide and 10%-25% of
potassium hydroxide. The auxiliary
cleaning agent comprises, by weight, 1%-3% of
sodium carbonate. The chelating agent comprises, by weight, 2%-5% of
sodium citrate and 3%-6% of sodium
diethylenetriamine pentaacetic acid. The surfactant comprises, by weight, 1%-3% of ester anionic surfactant and 1%-4% of
fatty alcohol-
polyoxyethylene ether. The environment-friendly degreasant for automobile
coating is non-
phosphorus alkaline environment-friendly degreasant without
phosphorus or
nitrogen, has the same
degreasing performance with original
phosphorus containing alkaline degreasant, and solves the technical problems that in the prior art, due to the fact that
phosphorus containing matter exists in the alkaline degreasant, certain difficulty is caused to following process
wastewater treatment, and emission and following treatment cost of pollutants are increased.