RUST INHIBITOR, RUST INHIBITOR COMPOSITION, FILM-FORMING MATERIAL AND METAL PART

To provide a rust inhibitor, a rust inhibitor composition, film-forming material and a metal part having a film having excellent anti-rust and anti-corrosion performance not only for an iron member but also for a non-ferrous metal part and capable of preventing rust or corrosion over a long period.SOLUTION: There is provided a rust inhibitor containing a compound represented by the following chemical formula (1). (wherein, R1 is a hydrogen atom or an aliphatic hydrocarbon group having 1 or more and 33 or less carbon atoms, R2 is an aliphatic hydrocarbon group having 1 or more and 33 or less carbon atoms, the total number of carbon atoms of R1 and R2 is 1 or more and 34 or less, X is a single bond or an aliphatic hydrocarbon group having 1 or more and 5 or less carbon atoms, one of A1 and A2 is -OH and the other thereof is -O-CH2-CH(OH)-CH2OH or -O-CH(-CH2-OH)2.)SELECTED DRAWING: None 【課題】鉄部材だけでなく非鉄金属部材に対しても優れた防錆・防食性能を有し、長期間にわたって錆や腐食を防ぐことができる防錆剤、防錆剤組成物、被膜形成材、被膜を有する金属部品を提供する。【解決手段】下記化学式（１）で表される化合物を含有する防錆剤。（式中、Ｒ１は水素原子又は炭素数１以上３３以下の脂肪族炭化水素基であり、Ｒ２は炭素数１以上３３以下の脂肪族炭化水素基であり、Ｒ１とＲ２の合計炭素数は１以上３４以下であり、Ｘは単結合又は炭素数１以上５以下の脂肪族炭化水素基であり、Ａ１及びＡ２のいずれか一方は−ＯＨであり、他方は−Ｏ−ＣＨ２−ＣＨ（ＯＨ）−ＣＨ２ＯＨ又は−Ｏ−ＣＨ（−ＣＨ２−ＯＨ）２である。）【選択図】なし