Description

Disperse Brown 19 is a synthetic organic dye belonging to the disperse dye class, widely used for its excellent coloring properties on synthetic fibers. This high-performance dye is valued for its ability to produce consistent, vibrant brown shades with good fastness properties, which is critical for maintaining product quality and brand integrity. It is an essential material for manufacturers in the textile and polymer industries, particularly for dyeing polyester, acetate, and nylon fibers.

Application

• Primary dyeing of polyester fabrics and yarns for apparel and home textiles.
• Coloration of cellulose acetate fibers used in linings and specialty garments.
• Dyeing of nylon fibers for automotive upholstery, carpets, and sportswear.
• Mass coloration of synthetic polymers during the spinning process.
• Printing applications on synthetic textiles to create patterned designs.
• Used in combination with other disperse dyes to achieve a wide spectrum of brown and olive shades.

Basic Information

Product Name	Disperse Brown 19
CAS No.	71872-49-6
Molecular Formula	C20H17N5O6
Molecular Weight	423.38 g/mol
Synonyms	Disperse Brown 19; C.I. 11155; 1,5-Diamino-4,8-dihydroxy-2-(4-nitrophenyl)anthraquinone; 1,5-Bis(ethylamino)-4,8-dihydroxyanthraquinone; Disperse Brown S-2R; Samaron Brown HRSL; Foron Brown S-2R; Palanil Brown 3REL
EINECS	Contact for details

Quality Control

Our Disperse Brown 19 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, dispersion stability, and fastness properties. Certificates of Analysis (COA) documenting purity, physical form, and application performance are available upon request 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 heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Brown powder or granules
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	Passes test
Fastness to Washing	≥ 4 (ISO 105-C06)
Fastness to Light	≥ 5 (ISO 105-B02)

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