Question

What is the difference between dyes and pigment?

Answer 1

1. Dyes: These are soluble in water and impart color by selective absorption.
2. Pigments: Tautochromeautochromehey are not soluble in water and many other solvents. It imparts color by either selective absorption or scattering of light.

Dyes	Pigments
1. An intensely colored or fluorescent organic substance, which imparts color to a substrate by selective absorption of light.	1. Colored, black, white, or fluorescent particulate organic or inorganic solids, usually are insoluble in water.
2. Has a direct affinity to the material, but doesn't require a binding agent.	2. Essentially physically and chemically unaffected by the substrate in which they are incorporated.
3. Auxochrome groups are present.	3. No auxochrome groups are present.
4. Organic in nature.	4. Both organic and inorganic are found in nature.