Description

Vat Brown 23 is a high-performance vat dye belonging to the anthraquinone chemical class, known for its excellent color fastness and stability. This compound is crucial for achieving durable, deep brown shades on cellulosic fibers like cotton, linen, and viscose, where resistance to washing, light, and chlorine is paramount. It is an essential raw material for textile manufacturers, industrial pigment producers, and specialty chemical formulators serving the global dyeing and printing industries.

Application

• Textile Dyeing: Primary application for dyeing cotton, linen, rayon, and other cellulosic fibers to produce brown shades with superior fastness properties.
• Yarn Dyeing: Used in the batch and continuous dyeing processes for sewing threads, denim yarns, and other industrial yarns.
• Pigment Manufacturing: Serves as a key intermediate in the production of high-quality, insoluble organic pigments for inks and coatings.
• Printing Inks: Utilized in the formulation of specialty printing inks where color permanence and chemical resistance are required.
• Technical Fabrics: Ideal for dyeing workwear, military fabrics, and outdoor textiles that demand high durability.
• Leather Coloring: Applied in the dyeing of leather goods to achieve rich, stable brown colors.

Basic Information

Product Name	Vat Brown 23
CAS No.	1328-26-3
Molecular Formula	C42H18N2O6
Molecular Weight	646.60 g/mol
Synonyms	C.I. Vat Brown 23; C.I. 69015; Vat Brown BR; Cibanone Brown BR; Indanthren Brown BR; Caledon Brown BR; Mikethren Brown BR; 16,17-Dihydro-5,9,14,18-anthrazinetetrone, 6,15-dihydro-6,15-dioxo-
EINECS	215-527-1

Quality Control

Our Vat Brown 23 is manufactured under a strict quality management system to ensure batch-to-batch consistency and compliance with global industry standards. Every lot is tested for critical parameters including color strength, shade, particle size distribution, and solubility. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee it meets your specific application 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. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Brown Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size (Passing 80 mesh)	≥ 95%
Solubility in DMSO	Complete
Fastness Properties (on Cotton)	Light: 6-7; Washing: 4-5; Chlorine: 4

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