第一鉄






酸化第一鉄(英: ferrous oxide)は厳密には酸化鉄(II)と呼ばれる。


第一鉄（だいいちてつ、ferrous、Fe2+）とは、二価鉄化合物（酸化数+2）を指す化学用語で、対するものに三価鉄化合物（酸化数+3）を指す第二鉄（ferric、Fe3+）がある[1]。




水溶液中の鉄のプールベダイアグラム


化学以外では、ferrousは鉄の存在を表す形容詞として用いられる[1]。この用語は鉄を意味するラテン語のferrumが由来である[2]。



出典



  1. ^ ab Ferrous, Merriam-Webster, http://www.merriam-webster.com/dictionary/ferrous 2008年4月19日閲覧。 .


  2. ^ Etymology (Meaning of Words), (30 November 2007), http://en.allexperts.com/q/Etymology-Meaning-Words-1474/Origin-word-1.htm 2008年4月19日閲覧。 .



関連項目




  • 非鉄金属（non-ferrous metal）

  • 第二鉄

  • 強磁性

  • 製鋼

  • 酸化鉄(II)

  • 塩化鉄(II)

  • 臭化鉄(II)




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