Pigments are nothing but organic or inorganic insoluble coloring materials. These are mainly used in the form of dispersions and remain unaffected by the surface or media on which it is applied or dispersed. There are different roles that pigments have. The most important one among them is definitely providing color on any surface or for any item. Apart from this, there are many more functions of pigments. Some of them include:
Providing resistance against corrosion
For obliterating any surface
For improving surface strength
For modifying flow properties
For improving durability and weathering properties
Difference between organic and inorganic pigments
Lots of talks are doing the rounds regarding organic and inorganic pigments. It is evident from the names that they are different from one another. Talking chemically, in the organic variant of pigments, carbon is present in the molecular structure; while in the inorganic one carbon is not present. Along with carbon, organic variants of pigments also contain traces of sulphur and nitrogen. Phthalocyanine pigments are best examples in this regard. In case of inorganic pigments, metal cations are found in array with non-metal anions. As a result, these pigments remain insoluble in plastic as well as in other kinds of solvents. Plants and plant products are the base from which organic dyes and pigments are made. On the other hand, inorganic pigments are made from chemical and artificial components only. Organic products are safe on use; while the inorganic ones come with serious side effects and might be unsafe for use.
Raw material science plays a big part in the quality of our products and our reputation in the industry. Since color is one of our core competencies, pigments are a very important material category. At a recent Americhem U color class, we were asked to define the differences between organic and inorganic pigments. Both play an important part in the world of colorants and both become an integral part of our color concentrates.
Organic pigments are based on carbon rings or carbon chains. Inorganic pigments are not based on carbon and could consist of metal oxides or other naturally occurring ingredients. From a standpoint of molecular structure, that is the primary difference, although organic pigments can contain inorganic elements that help stabilize the properties of the organic, carbon-based component.
Inorganic
Larger particle size
Generally more opaque, with better ability to hide a substrate or base color
Lower chroma, or brightness
Generally more stable, for example, to light or chemicals
Can be derived from minerals or metals
Take less energy to fully develop, or disperse, the color
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Products :
Organic
Smaller particle size
More transparent or translucent
Higher chroma
Generally less stable, particularly to sunlight and heat
One class of organics are dyes
Could be derived from plants and plant products
Take more energy to disperse
Examples of inorganic pigments include titanium dioxide white or iron oxide red. Examples of organic pigments include Phthalocyanine blue or green and Quinacridone red or violet. Despite the long, alphabet-spanning names, the common thread is that carbon is present in their molecular structure. organic pigments manufacturers india
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