Inorganic Color Pigments; More Opaque and More Insoluble than Organic Pigments
Inorganic color pigments are produced from compounds
obtained from inorganic metallic compounds. Inorganic color pigments are
classified into many groups, such as purple pigments (aluminum pigments, copper
pigments, cobalt pigments, manganese pigments, and gold pigments), Blue
pigments (aluminum, cobalt, copper, manganese, and iron), Green pigments
(cadmium, chromium, cobalt, and copper), Yellow pigments (arsenic, bismuth,
cadmium, chromium, cobalt, iron, lead, titanium, tin, and zinc), Orange
pigments (bismuth, cadmium, and chromium), Red pigments, Brown pigments, Black
pigments, White pigments, etc.
Inorganic
color pigments are either derived from natural sources or are synthesized. Chrome
oxide and Iron oxide pigments are characterized by their chemical resistance
and weather stability. With the increasing urbanization (which leads to the
increasing demand for paints and coatings, building materials, and plastics) the
demand for inorganic color pigments is also increasing. Moreover, there is a
huge demand for organosulfur compounds in various end-use industries, such as
the automotive industry.
For instance, Ford Motor, the United States-based automaker,
plans to invest US$ 11 billion in electric vehicles by 2022 and have 40 hybrid
and fully electric vehicles in its model lineup. Application of inorganic
pigments on automotive bodies gives tinting strength, brightness, and fastness.
Moreover, according to the Italian automobile manufacturers association (ANFIA),
around 1,916,320 units were sold in Italy in 2019, a 0.3% increase from that of
2018.
Inorganic color pigments are widely used in various end-use
industry due to their lightfastness and low cost. They are a popular choice in
the industry for several reasons, but they have their drawbacks. Some of the
most significant positive and negative properties of inorganic pigments are excellent
fade resistance, cost-effective, poor tonality, and harmful to the environment
due to the presence of lead salts in their composition. There are two primary
types of pigment, such as organic and inorganic. Thus, it is important to
understand what these types of pigments are and how they differ.
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