Description

Disperse Brown 27 is a synthetic organic dye belonging to the disperse dye class, widely used for its excellent colorfastness properties. This high-performance dye is engineered to provide consistent, vibrant brown coloration with strong affinity for synthetic fibers. It is a critical component for manufacturers in the textile and polymer industries requiring durable, high-quality dyeing. The product is supplied as a fine powder, ensuring ease of handling and dispersion in various application processes.

Application

Disperse Brown 27 is primarily utilized for dyeing and printing synthetic textiles and is valued for its performance in demanding conditions.

• Polyester Fiber Dyeing: The primary application for achieving a range of brown shades on polyester fabrics and yarns with excellent wash and light fastness.
• Acetate and Triacetate Dyeing: Used for coloring cellulose acetate and triacetate fibers, providing good leveling and penetration.
• Nylon Coloring: Applicable for dyeing nylon textiles, often used in blends with other fibers.
• Plastics and Polymer Mass Coloration: Incorporated into polymers like polystyrene, polycarbonate, or acrylics during the melt phase for consistent, intrinsic coloration.
• Transfer Printing: Suitable for use in the manufacture of transfer papers for the sublimation printing of synthetic fabrics.
• Automotive Textiles: Employed in dyeing polyester-based automotive upholstery and interior fabrics due to its durability.

Basic Information

Product Name	Disperse Brown 27
CAS No.	94945-21-8
Molecular Formula	C20H17N5O6
Molecular Weight	423.38 g/mol
Synonyms	Disperse Brown 27; C.I. 11132; Disperse Brown S-2R; Brown 2R; 1,5-Diamino-4,8-dihydroxy-2-(4-nitrophenyl)anthraquinone; 1,5-Bis(ethylamino)-4,8-dihydroxyanthraquinone; Samaron Brown HRS; Foron Brown S-2R
EINECS	Contact for details

Quality Control

Our Disperse Brown 27 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Quality is verified through a series of analytical tests including spectrophotometric analysis for strength and shade, HPLC for purity and impurity profiling, and standardized application tests for dyeing performance. A Certificate of Analysis (COA) detailing specific results for each batch is provided to guarantee the product meets agreed technical specifications.

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 heat sources and incompatible materials. The product is light-sensitive (store away from light).

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	≤ 5.0%
Ash Content	≤ 1.0%
Dispersion Stability	Good
Particle Size	> 95% passes 80 mesh

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