iron oxide
Noun
Meaning
iron oxide (countable and uncountable, plural iron oxides)
(chemistry) The compound obtained by the reaction of oxygen on iron. Either iron(II) oxide (old term ferrous oxide, chemical formula FeO) or iron(III) oxide (old term ferric oxide, chemical formula Fe2O3). Generally known as rust when hydrated.
Synonyms
Examples
A clay of limonite rich in iron oxide is the source of raw sienna and burnt sienna.
Analyzing the sand, he determined the presence of two metal oxides: iron oxide (explaining the attraction to the magnet) and 45.25% of a white metallic oxide he could not identify.
Chunling (2008), China Red. pg. 4 Red, black and white were the first colors used by artists in the Upper Paleolithic age, probably because natural pigments such as red ochre and iron oxide were readily available where early people lived.
Fibreglass boats are strong, and do not rust (iron oxide), corrode, or rot.
In 1752, the French chemist Pierre Macquer made the important step of showing that Prussian blue could be converted to iron oxide plus a volatile component and that these could be used to reconstitute it.
Isabellle Roelofs and Fabien Petillion, La Couleur explquée aux artistes, p. 30. * Raw sienna and burnt sienna are also clay pigments rich in iron oxide, which were mined during the Renaissance around the city of Siena in Tuscany.