Search results
Results from the WOW.Com Content Network
This red is a tone of Indian red, made like Indian red with pigment made from iron oxide. The first recorded use of English red as a color name in English was in the 1700s (exact year uncertain). [10] In the Encyclopédie of Denis Diderot in 1765, alternate names for Indian red included "what one also calls, however improperly, English Red." [11]
Download QR code; Print/export ... Oxide red: RAL 3011: Brown red: ... Code Hue Lightness Chromaticity Sample Red Green Blue Ink Black: 0° ...
Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe 2 O 3. It occurs in nature as the mineral hematite , which serves as the primary source of iron for the steel industry. It is also known as red iron oxide , especially when used in pigments .
The color of blood red ranges from crimson to a dark brown-red and may have a slightly orange hue. In the RGB color spectrum, it often consists only of the color red, with no green or blue component; in the CMYK color model blood red has no cyan, and consists only of magenta and yellow with a small amount of black.
Download QR code; Print/export Download as PDF; Printable version; ... X11 color W3C color Hex Red Green Blue Sample Sample Hex Red Green Blue Gray: #BEBEBE: 75%: 75%:
Similarly, color is due to the energy absorbed by the compound, when an electron transitions from the HOMO to the LUMO. Lycopene is a classic example of a compound with extensive conjugation (11 conjugated double bonds), giving rise to an intense red color (lycopene is responsible for the color of tomatoes ).
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]
Venetian red is a light and warm (somewhat unsaturated) pigment that is a darker shade of red. The composition of Venetian red changed over time. The composition of Venetian red changed over time. Originally it consisted of natural ferric oxide (Fe 2 O 3 , partially hydrated ) obtained from the red hematite .