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Solvent Red 25

Solvent Red 25 is an oil-soluble solvent dye used widely to color plastics (ABS, PS, PVC, PMMA, SAN), inks, coatings, waxes, lubricants and fuel. It delivers vivid red tones with high tinctorial strength, good heat resistance and good migration/bleed resistance when formulated correctly.

Key Features

  • Oil-soluble red dye — insoluble in water, soluble in common organic solvents (acetone, aromatics, alcohol in part).
  • High tinctorial strength — low loading required for transparent and opaque colorations.
  • High heat resistance for polymer melt processing (typical processing stability up to ~250–260°C depending on matrix and grade).
  • Good light fastness and migration resistance in many polymer systems when properly formulated.

Applications

  • Plastics:Color masterbatch and direct coloring for ABS, PS, SAN, PVC, PMMA, etc.
  • Inks & Coatings:Solvent-based inks, coatings and varnishes for bright red shades.
  • Fuel & Lubricants:Fuel marking dyes and lubricant coloration (when regulatory permitted).
  • Waxes & Candles:Vivid coloration for paraffin and wax systems.

Technical Specifications

  • ‍CAS NO: 3176-79-2
  • CI.NO: 26110
  • EINECS: 221-647-7

  • Chemical Family: AZO series

  • Molecular Formula: C24H20N4O
  • Molecular Weight: 380.4418
  • Shade: reddish transparent oil solvent dye.‍

Density(g/cm3)

1.192

Melting Point(°C)

175

Light Fastness

5-6

Heat resistance

260

Flash Point (°C)

306

Boiling Point(°C)

582

Acetone

19.4

Butyl Acetate

17.9

Methylbenzene

23.5

Dichloromethane

48.9

Ethylalcohol

6.9

Package

20 or 25kg/compound bag, carton box, iron drum, fiber durm for powder dye and 1000kg/tank for liquid dye

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