Description

Disperse Yellow 186 is a high-performance synthetic organic dye belonging to the disperse dye class, specifically engineered for hydrophobic fibers. This product is valued for its excellent color fastness properties, including good lightfastness and wash fastness, making it a reliable choice for demanding coloration processes. It is primarily used by manufacturers in the textile and plastics industries seeking vibrant, durable yellow hues.

Application

• Textile Dyeing: Primary application for dyeing hydrophobic fibers such as polyester (PET), acetate, and nylon, especially in high-temperature dyeing processes.
• Plastics Coloring: Used as a colorant for engineering plastics, including polystyrene (PS), polycarbonate (PC), and ABS, where thermal stability is required.
• Ink Manufacturing: Suitable for formulating specialty inks for transfer printing and other applications requiring good dispersion and color strength.
• Automotive Interiors: Coloration of synthetic fabrics and plastic components used in vehicle upholstery and trim.
• Sportswear and Outdoor Gear: Dyeing of high-performance polyester fabrics for activewear, jackets, and tents due to its durability.
• Masterbatch Production: A key pigment for creating color concentrates (masterbatches) used in bulk plastics processing.

Basic Information

Product Name	Disperse Yellow 186
CAS No.	108173-53-1
Molecular Formula	C18H14Cl2N6O2
Molecular Weight	425.25 g/mol
Synonyms	C.I. Disperse Yellow 186; Disperse Yellow SE-4R; Disperse Yellow H4R; 2-[(4-Amino-2,5-dichlorophenyl)azo]-N-(2-cyanoethyl)-3-oxobutanamide; 1-[(2,5-Dichloro-4-aminophenyl)azo]-1,3-dihydro-3-oxo-4-(2-cyanoethyl)amino-2H-indol-2-one; Samaron Yellow H4R; Foron Yellow SE-4R; Dianix Yellow H4R
EINECS	Contact for details

Quality Control

Our Disperse Yellow 186 is manufactured under a strict quality management system. Every batch undergoes rigorous testing to ensure consistent shade, dispersion stability, and performance characteristics. Key parameters such as color strength, particle size distribution, and fastness properties are verified against established standards. Certificates of Analysis (COA) detailing purity and specific test results 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 strong oxidizing agents. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Yellow to reddish-yellow powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes test

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