Iron(II) oxalate

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Ferrous oxalate (iron(II) oxalate) refers to the inorganic compound with the formula FeC2O4 (anhydrous) or FeC2O4·2H2O (dihydrate). These are yellow compounds. Characteristic of metal oxalate complexes, these compounds tend to be polymeric, hence their low solubility in water. The dihydrate is hygroscopic.

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