| 摘要 |
PROBLEM TO BE SOLVED: To provide an antifreezing solution composition capable of suppressing the blacking of aluminum or an aluminum alloy used in a cooling system of an internal combustion engine. SOLUTION: This antifreezing solution composition consists essentially of glycol containing a corrosion suppressing agent, contains a dicarboxylic acid or a tricarboxylic acid and/or their salts having a 10-20C alkyl group as the end group and contains no amines, nitrites, phosphates, borates and silicates. The blacking of aluminum and the aluminum alloy used in the cooling system of the internal combustion engine is suppressed. |
