Pigments by chemical composition

Metallic and carbon Cadmium pigments: cadmium yellow, cadmium red, cadmium green, cadmium orange Carbon pigments: carbon black (including vine blac, lamp black), ivory black (bone char) Chromium pigments: chrome yellow and chrome green Cobalt pigments: cobalt violet, cobalt blue, cerulean blue, aureolin (cobalt yellow) Copper pigments: Azurite, Han purple, Han blue, Egyptian blue, Malachite, Paris green, Phthalocyanine Blue BN, Phthalocyanine Green G, verdigris, viridian Iron oxide pigments: sanguine, caput mortuum, oxide red, red ochre, Venetian red, Prussian blue Clay earth pigments (iron oxides): yellow ochre, raw sienna, burnt sienna, raw umber, burnt umber. Lead pigments: lead white, cremnitz white, Naples yellow, red lead Mercury pigments: vermilion Titanium pigments: titanium yellow, titanium beige, titanium white, titanium black Ultramarine pigments: ultramarine, ultramarine green shade Zinc pigments: zinc white, zinc ferrite Biological and organic Biological origins: alizarin (synthesized), alizarin crimson (synthesized), gamboge, cochineal red, rose madder, indigo, Indian yellow, Tyrian purple Non biological organic: quinacridone, magenta, phthalo green, phthalo blue, pigment red 170 Zinc ferrites are a series of synthetic inorganic compounds of zinc and iron (ferrite) with the general formula of ZnxFe3-xO4. Zinc ferrite compounds can be prepared by aging solutions of Zn(NO3)2, Fe(NO3)3, and triethanolamine in the presence and in the absence of hydrazine,[1] or reacting iron oxides and zinc oxide at high temperature. Spinel (Zn, Fe) Fe2O4 appears as a tan-colored solid that is insoluble in water, acids, or diluted alkali.[2] Because of their high op

city, zinc ferrites can be used as pigments, especially in applications requiring heat stability. For example, zinc ferrite prepared from yellow iron oxide can be used as a substitute for applications in temperatures above 350 °F (177 °C).[3] When added to high corrosion-resistant coatings, the corrosion protection increases with an increase in the concentration of zinc ferrite.[4] A recent investigation shows that the zinc ferrite, which is paramagnetic in the bulk form, becomes ferrimagnetic in nanocrystalline thin film format. [5] A large room temperature magnetization and narrow ferromagnetic resonance linewidth have been achieved by controlling thin films growth conditions. Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red[1]) is an organic compound with formula C14H8O4 that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus.[2] In 1869, it became the first natural pigment to be duplicated synthetically.[3] Alizarin is the main ingredient for the manufacture of the madder lake pigments known to painters as Rose madder and Alizarin crimson. Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue. A notable use of alizarin in modern times is as a staining agent in biological research because it stains free calcium and certain calcium compounds a red or light purple color. Alizarin continues to be used commercially as a red textile dye, but to a lesser extent than 100 years ago.