The Fundamentals of Dyes and Pigments
India’s dyes and pigments industry is vast, especially considering that textiles are one of the major industries here. The pigment industry’s production value in India reached roughly 133.52 million tons. (Source)
So let us understand the basics of dyes, the basics of pigments, and what the difference between the two is.
Dyes are colored substances that bond chemically with the subtract that is being applied. First, let’s take the definition of The Ecological and Toxicological Association of Dyes and Organic Pigment Manufacturers; dyes are said to be fluorescent, organic substances that provide color to the substances where it is being applied.
Dyes are very soluble and can actually attach themselves to the fabric or the substance where it is being poured. Usually, dyes are applied for the purposes of decoration, aesthetics, and identification as per certain dye manufacturers in India.
The dyes which are obtained from natural resources are natural dyes. They were the primary source of dyes, traditionally. But, nowadays, even natural dyes are synthetic dyes. Products such as leather, clothes, food, and houses have all been enhanced with dyes.
The dyes that are extracted from organic or inorganic compounds are known as synthetic dyes. The recent dyes that have become prevalent are acid, direct, primary, reactive, mordant, metal complex, vat, sulfur, and disperse.
Synthetic dyes are affordable and come in a variety of colors. They also provide a better quality of colors than natural dyes.
Pigments can be considered powdered materials that do not mix with water. Pigments do enhance the materials, but they are insoluble. If we put it in a straightforward way, pigments are powders that improve the product’s look and appearance through the scattering of light.
The pigments made of ground material are known as inorganic pigments. They are not made of carbon or rings but metals and metallic salts. Pigments are more opaque and not soluble in aqueous solutions.
The best part is, though, that inorganic pigments are very budget-friendly and very easy when it comes to manufacture them. Moreover, if produced in large quantities, pigments are very profitable. The most commonly used inorganic pigment is called Pigment 7.
The pigments comprised of carbon chains and rings are organic. This makes these pigments extremely stable. Historically, organic pigments were usually extracted from flora and fauna.
What is the difference between dyes and pigments?
Both dyes and pigments have their uses in the industries but are they fundamentally different? Let us read that in brief.
Pigments are insoluble in solvents, while dyes are soluble in water and other solvents.
Size of particles
Pigment particles are more prominent than the size of the dye particles. This is because pigments have larger particles which are helpful in the scattering of light.
Compared to dyes, pigments are more resistant to light. Dyes are also more prone to losing color, brightness, or spark if exposed to heat, light, or air. However, when it comes to pigments, they are better at retaining brilliance and luster, and aura despite being exposed to sunlight.
You can go in-depth and understand the technical fundamentals of pigments and dyes, or you can go through sufficient knowledge to understand these two substances precisely.
Colors are an essential part of our day-to-day lives and represent whole emotions, feelings, vision, and goals. But, when it comes to dyes and pigments, each holds a unique feature of its own that makes it valuable to many industries, not just in India but across the world.
Frequently Asked Questions:
Q.1 What is the difference between dyes and pigments chemistry
A. Dyes and pigments are the main forms of colourant. The main difference between them is that dyes are soluble and pigments are insoluble and are suspended in a medium or binder. This is due to the difference in particle size of dyes and pigments which affects the way they behave.
Q.2 What are the uses of dyes and pigments?
A. Dyes and pigments are the most important colourants used to add colour or to change the colour of something. They are widely used in the textile, pharmaceutical, food, cosmetics, plastics, paint, ink, photographic and paper industries.
Q.3 Can you mix pigment and dye ink?
A. You may hear that you shouldn’t mix dye ink and pigment ink. It is true. It would be best if you didn’t use the combination for an extended period. The reason is dye ink and pigment ink has different base solutions.