| 摘要 |
A high-concentration concentrate composition of organic acid salts is provided to ensure maintenance of a stable state of high-concentration organic salt additives, to realize improved service life, and to impart cooling activity and anti-corrosive property to an internal combustion engine. A high-concentration concentrate composition of organic acid salts comprises: 1-40 wt% of an organic acid mixture obtained by neutralizing an organic acid mixture containing dicarboxylic acids and monocarboxylic acids in a weight ratio of 1:1-5(dicarboxylic acids : monocarboxylic acids) with potassium hydroxide; 0.5-5 wt% of a nitrite salt; 1-5 wt% of an azole compound; and the balance amount of water. The nitrite salt is at least one selected from sodium nitrite and potassium nitrite, and the azole compound is at least one selected from tolyltriazole, benzotriazole, 4-phenyl-1,2,3-triazole, 3-naphthotriazole, 4-nitrobenzotriazole and salts thereof. |
