Dyes are synthesized in a reactor, filtered, dried, and blended with other additives to produce the final product. … In general, organic compounds such as naphthalene are reacted with an acid or an alkali along with an intermediate (such as a nitrating or a sulfonating compound) and a solvent to form a dye mixture.

What are the sources of natural dyes?

Historically, plants have been used for the extraction of a majority of natural dyes. Various plant parts including roots, leaves, twigs, stems, heartwood, bark, wood shavings, flowers, fruits, rinds, hulls, husks, and the like serve as natural dye sources.

Which chemical is used in the manufacturer of dyes?

Sulphuric acid is used in the manufacturing of pigments, such as paints and printing ink.