The main structure of introduced organic pigments

Pigments come from the chemical composition can be divided into inorganic and organic pigments into two categories, for its source can be divided into natural pigments and synthetic pigments. Natural mineral pigments sources, such as : cinnabar, clay , realgar , malachite green and heavy calcium carbonate pigment folk painting , wollastonite, barite powder , talc, mica, kaolin and so on. Of biological origin, such as from animals : cochineal , natural scale powder ; from plants are: Garcinia , alizarin red , indigo . Synthesized by the synthetic pigment , such as titanium dioxide , lithopone , lead, chrome yellow , iron blue inorganic pigments , as well as Big Pink , even yellow, phthalocyanine blue, quinacridone organic pigments. Functional pigment classified as anti-rust pigments, magnetic pigments, luminescent pigments, pearlescent pigments, conductive pigments. With color-coded , it is convenient to use the method . So pigments can be divided into white, yellow , red, blue , green, brown, purple, black , regardless of their origin or chemical composition. The famous ” Colour Index ” (ColorIndex) method is used to color classification : yellow as the pigment into the pigment (PY), Pigment Orange (PO), Pigment Red (PR), Pigment Violet (PV), Pigment Blue (PB) , pigment Green (PG), pigment Brown (PBr), pigment black (PBk), pigment White (PW), metallic paint (PM) and other ten categories , the same number of color pigments are arranged in the order , such as titanium dioxide as the PW- 6 lithopone PW-5, lead chrome yellow PY-34, quinacridone PR-207, red iron oxide PR-101, phthalocyanine Blue PB-15 and the like. To find the chemical composition, the structure has another number, such as titanium dioxide PW-6C.I.77891, phthalocyanine blue is PB-15C.I.74160, manufacturers can make the pigment and the pigment listed users to identify the chemical composition and structure . So are widely used in the international import and export methyl tin stabilizer  trade paint , paint some domestic manufacturers also use the international classification standards of this pigment. China ‘s national standard paint GB/T3182-1995, also uses color-coded . Each pigment colors are a symbol , such as white as BA, red for HO, yellow for the HU …… combined with the chemical structure oxidized PE WAX  of the pigment composition code and serial models, such as rutile titanium dioxide BA-01-03, chrome yellow HU-02-02, red iron oxide HO-01-01, lithopone BA-11-01, toluidine red HO-02-01, BGS phthalocyanine blue LA-61-02 and so on .
The pigment may be contained in the compound according to the classification categories : inorganic pigments can be broken down  titanium dioxide anatase as oxides, chromates, sulfates, silicates , borates, molybdates, phosphates, vanadates , ferricyanates , hydroxides, sulfides , metal, etc. ; chemical structure of organic compounds can be classified into pigment azo pigments, phthalocyanine pigments, anthraquinone , indigoid , quinacridone , dioxazine pigments polycyclic aryl methane pigments and the like.
From the perspective of manufacturing can be categorized into the titanium pigment , iron pigment , chrome pigment, lead-based pigments, zinc-based pigment, a metallic pigment , organic synthetic pigments , this classification method has practical significance , a system can often on behalf of a professional production of the pigment industry .
From the application point of view can be classified into paint pigment , ink pigment , plastic pigment , rubber paint , ceramics and enamel paint , pharmaceutical cosmetics pigments, pigment , etc. Fine . Various special pigments have some unique properties to meet the requirements of the application . Pigment production plant can be targeted to professional users recommended a series of paint products.