From Common Dyes and Their Properties

Classification of Dyes

Dyes are classified based on their origin, application, and chemical properties. Dye manufacturers classify dyes according to their chemical properties, while dyers classify dyes based on the method of application.

Classification Based on Origin of Dyes

Most dyes are organic molecules and are complex in nature. The synthesis of organic dyes began with azulene synthesis. Before that, colors were made from pigments.

As a result, dyes can be classified as natural and synthetic, according to their sources of origin.

Natural Dyes

Natural dyes are derived from nature through organic and inorganic materials or sources. Logwood is a natural dye obtained from plants. It saturates silk, wool, cellulose acetate, and nylon with a deep black color. Tyrian purple is obtained from animals and Prussian blue is an inorganic dye obtained from naturally occurring minerals.

Synthetic Dyes

Synthetic dyes became popular because they were easy-to-use, less expensive and had wider range of colors. Synthetic dyes are obtained by adding chemicals to natural dyes. For example, artificial alizarin is a synthetic dye synthesized from coal tar anthracene. Synthetic dyes are used for modern clothing.

Classification Based on the Dyeing Process

Dyeing process is accomplished by dissolving or dispersing the colorant in a suitable solution (usually water) and bringing this system into contact with the material to be dyed. According to the process of dying, dyes are classified into the following types:

  • Acid

  • Basic

  • Mordant

  • Direct

  • Reactive

  • Vat

  • Disperse

  • Sulfur

  • Azo

Acid Dyes

Acid dyes are anionic dyes soluble in water.


Products & Services
Industrial Dyes
Industrial dyes are colorants consisting of single molecules that are able to absorb certain parts of the spectrum of visible light and reflect others.
Pigments
Industrial pigments are finely ground powdery substances that are one of the basic components of paint or caulk.
Colorants
Colorants are dispersed in paints and caulk to provide characteristics such as color, hiding power, bulk, durability and corrosion resistance.
Organic Chemicals
Organic chemicals are chemical compounds that contain carbon in their molecular structure.
Organic Solvents
Organic solvents are chemicals with a carbon molecule base that are used to dissolve a material or extract one material from another.

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