Description

Pigment Brown 25 is a high-performance, synthetic organic pigment known for its excellent color strength and durability. This pigment is valued for its ability to provide consistent, high-quality brown coloration with strong tinting power and good lightfastness. It is an essential raw material for manufacturers in the coatings, plastics, and printing ink industries seeking reliable and stable brown shades for their products.

Application

• Industrial and decorative paints and coatings, including automotive finishes.
• Coloration of various plastics and polymers, such as PVC, polyolefins, and engineering resins.
• Manufacturing of printing inks for packaging, publications, and textiles.
• Pigmentation of synthetic fibers and masterbatches.
• Coloring for construction materials like concrete, mortar, and roofing granules.
• Specialty applications in artist colors and leather finishes.

Basic Information

Product Name	Pigment Brown 25
CAS No.	6992-11-6
Molecular Formula	C24H15FeN3O6
Molecular Weight	497.24 g/mol
Synonyms	Pigment Brown 25; C.I. 12510; Iron complex of 2-nitroso-1-naphthol; CI 12510; 1-Naphthol, 2-nitroso-, iron complex; 2-Nitroso-1-naphthol iron complex; Brown 25; C.I. Pigment Brown 25
EINECS	230-269-6

Quality Control

Our Pigment Brown 25 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, hue, particle size distribution, and chemical purity. Certificates of Analysis (COA) documenting these results are available for every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Brown Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Conforms to Standard
Particle Size (D50)	< 5.0 μm
Volatile Matter (at 105°C)	< 2.0 %
Water Soluble Matter	< 1.5 %
pH Value (10% Aqueous Slurry)	5.0 - 8.0
Lightfastness	≥ 6 (ISO 105-B02)
Heat Resistance	≥ 180°C

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.