Iron oxide red
Reddish pigment / From Wikipedia, the free encyclopedia
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Iron oxide red is a generic name of a ferric oxide pigment of the red color. Multiple shades based on both anhydrous Fe
2O
3 and its hydrates were known to painters since prehistory. The pigments were originally sourced from natural sources, since the 20th century they are mostly synthetic. These substances form one of the most commercially important groups of pigments, and their names sometimes reflect the location of a natural source, later transferred to the synthetic analog. Well-known examples include the Persian Gulf Oxide with 75% Fe
2O
3 and 25% silica, Spanish red with 85% of oxide, Tuscan red. [1]
"Indian red" redirects here. For the song, see Indian Red.