Description

Vat Brown 5 is a synthetic organic pigment belonging to the vat dye class, known for its excellent colorfastness and chemical stability. This compound is valued for its ability to produce deep, durable brown shades that are resistant to fading from light, washing, and various chemical exposures. It is primarily utilized by manufacturers in the textile and specialty coatings industries seeking high-performance colorants for demanding applications.

Application

• Textile Dyeing and Printing: Primary application for dyeing cotton, wool, and other natural fibers, valued for its wash and light fastness.
• Industrial Coatings: Used in high-durability paints and coatings for automotive, agricultural, and construction equipment.
• Plastics and Masterbatch Coloring: Imparts stable brown coloration to polymers like polyolefins and PVC during processing.
• Leather Finishing: Employed in dyeing leather goods where rich, lasting color is required.
• Paper Coloration: Used for specialty papers requiring high color stability.
• Artist and Specialty Inks: A component in high-quality inks for fine art and security printing applications.

Basic Information

Product Name	Vat Brown 5
CAS No.	3989-75-1
Molecular Formula	C42H18N2O6
Molecular Weight	646.60 g/mol
Synonyms	Vat Brown 5; C.I. 73410; C.I. Vat Brown 5; Pigment Brown 28; Cibanone Brown 5R; Caledon Brown 5R; Indanthren Brown 5R; 16,17-Dihydrodinaphtho[2,3-a:2',3'-i]phenazine-5,9,14,18-tetrone
EINECS	223-637-6

Quality Control

Our Vat Brown 5 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Quality parameters including color strength, shade, particle size distribution, and chemical purity are rigorously tested. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee compliance with your technical requirements.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Brown Powder
Identification (IR)	Conforms
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
Particle Size (D50)	< 5.0 µm

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