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2. Iron oxide red - Wikipedia

   en.wikipedia.org/wiki/Iron_oxide_red

   Iron oxide pigments in jars: yellow, red, brown. Iron oxide red is a generic name of a ferric oxide pigment of reddish colors. Multiple shades based on both anhydrous Fe 2 O 3 and its hydrates were known to painters since prehistory. The pigments were originally obtained from natural sources, since the 20th century they are mostly synthetic.

3. Red pigments - Wikipedia

   en.wikipedia.org/wiki/Red_pigments

   Red pigments are materials, usually made from minerals, used to create the red colors in painting and other arts. The color of red and other pigments is determined by the way it absorbs certain parts of the spectrum of visible light and reflects the others.

4. Iron(III) oxide - Wikipedia

   en.wikipedia.org/wiki/Iron(III)_oxide

   Some of them, e.g., Pigment Red 101 and Pigment Brown 6, are approved by the US Food and Drug Administration (FDA) for use in cosmetics. Iron oxides are used as pigments in dental composites alongside titanium oxides. [23] Hematite is the characteristic component of the Swedish paint color Falu red.

5. List of inorganic pigments - Wikipedia

   en.wikipedia.org/wiki/List_of_inorganic_pigments

   Raw umber (PBr7): a natural clay pigment consisting of iron oxide, manganese oxide and aluminum oxide: Fe 2 O 3 + MnO 2 + n H 2 O + SiO 2 + Al 2 O 3. When calcined (heated) it is referred to as burnt umber and has more intense colors. Raw sienna (PBr7): a naturally occurring yellow-brown pigment from limonite clay. Used in art since prehistoric ...

6. Minium (pigment) - Wikipedia

   en.wikipedia.org/wiki/Minium_(pigment)

   Minium, also known as red lead or red lead oxide, is a bright orange red pigment that was widely used in the Middle Ages for the decoration of manuscripts and for painting. Often mistaken for less poisonous cinnabar and vermillion , minium was one of the earliest pigments artificially prepared and is still in use today. [ 1 ]

7. Lead (II,IV) oxide - Wikipedia

   en.wikipedia.org/wiki/Lead(II,IV)_oxide

   Lead(II,IV) oxide, also called red lead or minium, is the inorganic compound with the formula Pb 3 O 4. A bright red or orange solid, it is used as pigment, in the manufacture of batteries, and rustproof primer paints. It is an example of a mixed valence compound, being composed of both Pb(II) and Pb(IV) in the ratio of two to one. [2]