Are you familiar with pigments?
Pigments, also known as colorants, color materials and are therefore used as raw materials in many industries. It exchanges the color of the light reflected back by selectively absorbing wavelengths. Everything you see around you is painted with color. Although people often confuse pigments with dyes. But they are different from each other. The main difference between colorants and dyes is their solubility. Dyes are very soluble in any non-solid mixture and can be easily dissolved in water and other liquids. However, this is not the case with colorants. Colorants can only be dissolved in liquids with the help of a binder.
A colorant must not be unstable in solid form at normal temperature. It should have the property of high tinting strength. The specific application of any colorant depends on the physical properties of the colorant and its cost and requirements. The words rust inhibitor and rust preventer are taken from Pigment Green 7 and rust. Rust preventers are the type of colorants that promote active corrosion. However, the least corrosive type of colorant is called rust inhibitor. The type of colorant between rust inhibitor and rust preventer is called inert colorant.
For industrial coatings and uses, metallic pigments are most widely used. Since colorants help protect metals from rust and corrosion, they are used to protect metal surfaces. Color is the most important selection criterion for latex paints or varnishes. Similarly, for metal coatings, the most important criterion for selecting a colorant is corrosion resistance. Colorants are not used in solution form, but in the form of finely ground solid particles. Similar colorants are used in oil-based and water-based paints, plastics, and printing inks. Colorants with strong hues are used to provide color to other materials.
Let's analyze organic pigments in detail
Like inorganic materials, organic materials have been used to provide color for thousands of years. Anyone who loves nature and works closely with plants knows that they can easily ruin clothes and dresses. People turned this observation into a kind process. The first organic colorants known to mankind consisted of carbon, hydrogen, nitrogen, and oxygen. They were usually animal products or natural plants harvested from nature. Sometimes phosphorus and sulfur atoms are also present in these organic colorants.
Organic colorants are usually transparent or colorless. The most common property of all organic colorants is their ability to have multiple adjacent multiple bonds. Examples of organic colorants include saffron, annatto, and lycopene. Lycopene gives tomatoes their red color. Meanwhile, saffron is a yellow compound extracted from the yellow hue of the stamens of the crocus flower. Another example of an organic colorant is indigo. Indigo is primarily harvested from the plant Indigofera sempervirens, which is found in the subtropical regions of Asia. They are primarily used to provide blue color to jeans. Tyrian purple, also known as royal purple, was only affordable to the rich and well-to-do. They are primarily used to provide color to clothing. Tyrian purple is extracted from sea snails through a labor-intensive and expensive process.