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Solvent Dyes: High-Performance Colorants for Non-Polar Applications
Solvent dyes are a class of non-ionic, oil-soluble dyes widely used for coloring organic solvents, plastics, fuels, waxes, and synthetic fibers. Known for their excellent solubility in non-polar media and vivid color intensity, solvent dyes are essential in both industrial and consumer product formulations.
What Are Solvent Dyes?
Solvent dyes are typically azo, anthraquinone, or metal complex-based compounds. They do not ionize in solution and dissolve directly in non-aqueous media, making them distinct from water-soluble dyes like acid or basic dyes.
Key Characteristics
High solubility in hydrocarbons, alcohols, esters, and other organic solvents
Bright, transparent colors with good lightfastness and thermal stability
Low migration and bleeding, especially in polymers and resins
Versatility across many substrates, from plastics to fuels and waxes