| abstract |
A general-purpose organic rust inhibitor which can effectively prevent corrosion of metals, and which comprising a compound represented by the general formula (1):n n wherein, in the above general formula (1), R₁ represents a fluorine-substituted alkyl group; R₂ is a hydrogen atom or a group defined for R₁ or an organic residue; R₃ and R₄ are hydrogen or an ionizable group at least for either of the two, or an ionizable group in which R₃ and R₄ are connected to each other. |