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Iron(III) chromate is the iron(III) salt of chromic acid with the chemical formula Fe 2 (CrO 4) 3. Discovery. Iron(III) chromate was discovered by Samuel Hibbert-Ware ...
For other compounds of chromium(III) as a means of distinguishing a chemical species such as hexacyanochromite(III). [Cr(CN) 6] 3− from an analogous compound in which chromium is a different oxidation state. The mineral chromite is an iron chromium oxide with empirical formula FeCr 2 O 4. Structurally, it belongs to the spinel group.
Chromite is a crystalline mineral composed primarily of iron(II) oxide and chromium(III) oxide compounds. It can be represented by the chemical formula of Fe Cr 2 O 4 . It is an oxide mineral belonging to the spinel group .
The primary chromium ore is the mixed metal oxide chromite, FeCr 2 O 4, found as brittle metallic black crystals or granules. Chromite ore is heated with a mixture of calcium carbonate and sodium carbonate in the presence of air. The chromium is oxidized to the hexavalent form, while the iron forms iron(III) oxide, Fe 2 O 3:
Ferric oxide, commonly called rust, is a very complicated material that contains iron(III). Iron(III) is found in many minerals and solids, e.g., oxide Fe 2 O 3 (hematite) and iron(III) oxide-hydroxide FeO(OH) are extremely insoluble reflecting their polymeric structure. Rust is a mixture of iron(III) oxide and oxide-hydroxide that usually ...
iron(III) metavanadate: 65842–03–7 FeWO 4: iron(II) tungstate: 13870–24–1 Fe 2 (C 2 O 4) 3: iron(III) oxalate: 19469–07–9 Fe 2 (CrO 4) 3: iron(III) chromate: 10294–52–7 Fe 2 (Cr 2 O 7) 3: iron(III) dichromate: 10294–53–8 Fe 2 O 3: iron(III) oxide: 1309–37–1 Fe 2 (SO 4) 3: iron(III) sulfate: 10028–22–5 Fe 2 SiO 4 ...
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Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium, magnesium, and tin alloys. [ 1 ] : p.1265 [ 2 ] The coating serves as a corrosion inhibitor , as a primer to improve the adherence of paints and adhesives , [ 2 ] as a decorative finish, or ...