Organic Vs Inorganic Pigments

Organic vs Inorganic Pigments

Organic vs Inorganic Pigments
The difference between Organic Pigments and Inorganic Pigments are based upon three principle factors. These three principle factors are given as follows:

Molecular structure of the pigmentsIn the molecules of the Inorganic Pigments, the cations of metal are found in an array form with the non-metallic anions. This arrangement doesn't allow these pigments to dissolve in the solvent and plastic. Examples: Iron oxide yellow, black, red and tan pigments.

In the molecules of the Organic Pigments, carbon chains or carbon rings are always present. As carbon element is associated with nitrogen and sulphur elements of the same class of the atomic table, so, sometimes in the molecules of the organic pigments, the atoms of nitrogen and sulphur atoms are also found along with the carbon atoms. Examples: Azo, pythalocyanine, diazo and anthraquinone pigments.

 

Source from where they are derivedThe main source of organic pigments are plants and plant products whereas inorganic pigments are manufactured from topical cosmetic and also from dirt.

 

The differences between Organic and Inorganic pigments
ParticularsInorganic PigmentsOrganic Pigments
SourceMineralsChemically refined oil
ColorOften dullBright
Dyeing / Coloring StrengthLowHigh
OpacityOpaqueTransparent
Light fastnessVery goodVary from poor to good
SolubilityInsoluble in solventsHave have little degree of solubility
Degree of safetyMay be unsafeUsually safe
Chemical StabilityOften sensitiveUsually good
CostModerateMostly too expensive

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    Mital Mehta

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    Kolorjet Chemicals Pvt Ltd.

    Malad West, Mumbai, Maharashtra, India

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