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Solvent Brown 12

Solvent Brown 12 is an oil-soluble dye belonging to the azo dye family. It provides a warm brown shade and is widely used in coloring petroleum products, plastics, inks, and wood stains. Due to its good solubility in organic solvents, Solvent Brown 12 is valued for applications requiring strong coloring strength, transparency, and stability in non-aqueous systems.

TRADE NAME:

Bismarck Brown Base,Oil Brown 12

Key Properties

  • Excellent solubility in organic solvents and petroleum products
  • Produces rich, warm brown shades with high coloring strength
  • Good transparency and dispersion in various media
  • Stable under heat and light in most applications
  • Widely applied in plastics, printing inks, coatings, and wood finishes
  • Resistant to bleeding and migration in non-polar systems

Application:

used for coloring of grease, paraffin, cellulose,synthetic resin paint.

Technical Specifications

  • ‍CAS NO: 4482-25-1
  • CI.NO: 21010:1
  • Chemical Family: Azo sereis
  • Molecular Formula: C21H24N8
  • Molecular Weight: 388.47
  • Shade: Dark yellow brown to brown.‍

Density(g/cm3)

1.70

Melting Point(°C)

170

Light Fastness

4-6

Heat resistance

200

Acetone

-

Butyl Acetate

20

Methylbenzene

10

Dichloromethane

30

Ethylalcohol

4.0

Item

Fastness

Sun

commonly

Heat-resisting

melting point(℃)

135

Stable to(℃)

>155

Water resistance

Good

sodium carbonate(5%)

unchanged

hydrochloric acid (5%)

Poor

Package

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

How does Solvent Brown 12 perform in plastics?

In plastics, Solvent Brown 12 provides a consistent brown shade with good heat stability. It disperses evenly and resists migration, making it suitable for applications like polystyrene, ABS, and polycarbonate.

Is Solvent Brown 12 suitable for coatings and wood finishes?

Yes, Solvent Brown 12 is frequently used in wood coatings, varnishes, and stains due to its transparency and ability to highlight natural wood patterns without masking the grain.

Does Solvent Brown 12 have good lightfastness?

It has moderate to good lightfastness depending on the application and exposure conditions. For outdoor or UV-intense applications, stabilization additives may be required to improve durability.

Can Solvent Brown 12 be blended with other dyes?

Yes, it can be blended with other solvent dyes to create customized brown or darker shades. It is often combined with yellow and black solvent dyes to expand the color range.

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