Solvent dyes are colored substances that are insoluble in water and can be dissolved in organic solvents. It is a dye that is insoluble in water but soluble in oils and fats. Solvent dyes can be divided into two categories: oil-soluble and alcohol-soluble.
Solvent dyes are mainly used for the coloring of wood and plastics, but also for transparent paints, inks, fats, oils, waxes, soaps, petroleum products and aerosols: aluminum foil, leather, etc. It can also be used for the coloring of synthetic pulp.