Description

Disperse Brown 5 is a synthetic organic dye belonging to the disperse dye class, widely recognized under the CAS registry number 12236-01-0. It is engineered for exceptional color fastness and dispersion stability, which are critical for achieving uniform and vibrant coloration on synthetic fibers. This product is essential for manufacturers in the textile industry who require reliable and consistent brown shades for polyester and acetate fabrics.

Application

• Primary dyeing of polyester fibers and fabrics.
• Dyeing of cellulose acetate and triacetate textiles.
• Printing applications on synthetic fiber blends.
• Coloration of plastic materials, such as polycarbonate and polystyrene.
• Manufacture of colored masterbatches for synthetic polymers.
• Research and development of new dye formulations and color matching.

Basic Information

Product Name	Disperse Brown 5
CAS No.	12236-01-0
Molecular Formula	C12H9N5O2
Molecular Weight	255.23 g/mol
Synonyms	Disperse Brown 5; C.I. 11105; 1-[(2,4-Dinitrophenyl)azo]-2-naphthol; 2-Naphthol, 1-[(2,4-dinitrophenyl)azo]-; Disperse Brown GR; Amacel Brown B; Artisil Brown 5B; Foron Brown S-3RFL
EINECS	235-428-9

Quality Control

Our Disperse Brown 5 is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including spectrophotometric analysis and thin-layer chromatography, to ensure consistent strength, shade, and dispersion properties. Certificates of Analysis (COA) detailing purity, dye content, and physical specifications are provided to guarantee compliance with industry and customer-specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Brown powder
Identification (IR)	Conforms to standard
Dye Content	≥ 98.0 %
Moisture Content	≤ 1.0 %
Ash Content	≤ 0.5 %
Dispersion Stability	Passes test
Particle Size	≤ 5 μm (Typical)

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