Description

Van Dyke Brown is a high-quality, stable inorganic pigment prized for its rich, deep brown color and excellent lightfastness. This product is essential for applications requiring durable, non-fading coloration and consistent batch-to-batch performance. It is widely utilized across the coatings, plastics, construction materials, and specialty inks industries for its reliable tinting strength and compatibility.

Application

• Industrial Coatings & Paints: Used in the formulation of protective and decorative paints for metal, wood, and architectural applications.
• Plastics & Masterbatch: Provides coloration for a wide range of plastic polymers, including PVC, polyolefins, and engineering plastics.
• Construction Materials: Incorporated into concrete, mortar, paving stones, and roofing tiles for integral coloring.
• Printing Inks: Serves as a pigment for specialty printing inks, including those for packaging and security applications.
• Artist's Colors: A key component in the manufacture of professional-grade oil paints, acrylics, and watercolors.
• Leather & Textile Finishing: Employed in dyes and finishes to achieve specific brown shades on leather and fabrics.

Basic Information

Product Name	Van Dyke Brown
CAS No.	72669-22-8
Molecular Formula	Complex inorganic mixture
Molecular Weight	N/A (Pigment)
Synonyms	Van Dyke Brown Pigment; CI 77499; Iron Oxide Brown; Natural Brown 9; Kassler Brown; Cologne Earth; Caput Mortuum; Mummy Brown; Mars Brown; Brown Iron Oxide
EINECS	Contact for details

Quality Control

Our Van Dyke Brown pigment is manufactured under a stringent quality management system to ensure consistent color properties, purity, and performance. Each batch is tested for key parameters including color value, particle size distribution, and chemical composition to meet industry specifications. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	Fine brown powder
Color Value	Conforms to standard
Purity (as Fe2O3)	≥ 95%
Moisture Content	≤ 1.0%
Particle Size (D50)	1.0 - 3.0 µm
Oil Absorption	25 - 35 g/100g
pH (10% slurry)	6.0 - 8.0
Lightfastness	Excellent (8 on Blue Wool Scale)

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