Description

Disperse Yellow 231 is a high-performance synthetic organic dye belonging to the disperse dye class, identified by CAS No. 143067-35-0. It is engineered to deliver excellent color fastness, thermal stability, and dispersion properties, which are critical for consistent and vibrant coloration in demanding industrial processes. This product is essential for manufacturers in the textile and polymer industries seeking reliable and efficient yellow dyeing solutions for synthetic fibers.

Application

• Textile Dyeing: Primary application for dyeing hydrophobic synthetic fibers such as polyester (PET), acetate, and nylon, offering excellent wash and light fastness.
• Plastics Coloring: Used as a colorant for engineering plastics, including polystyrene (PS), ABS, and polycarbonate (PC), providing uniform dispersion and heat stability during processing.
• Ink Formulation: Suitable for specialty inks, including inkjet and textile printing inks, where fine particle size and color purity are required.
• Automotive Interiors: Employed in coloring synthetic fabrics and plastic components used in vehicle upholstery and trim.
• Sportswear Fabric: Ideal for high-performance athletic wear made from polyester blends, ensuring color retention through repeated washing and UV exposure.
• Masterbatch Production: A key component in the manufacture of color concentrates (masterbatches) for consistent batch-to-batch coloring of polymers.

Basic Information

Product Name	Disperse Yellow 231
CAS No.	143067-35-0
Molecular Formula	C18H14ClN5O4
Molecular Weight	399.79 g/mol
Synonyms	Disperse Yellow 231; C.I. Disperse Yellow 231; 2-[(4-Amino-2-nitrophenyl)azo]-N-(2-cyanoethyl)-3-oxobutanamide; Disperse Yellow SE-4GL; Samaron Yellow H4GL; Foron Yellow SE-4GL; Dianix Yellow H4G; Kayalon Polyester Yellow H4GL-SF
EINECS	Contact for details

Quality Control

Our Disperse Yellow 231 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing, including purity assay, shade strength, particle size distribution, and dispersion stability. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive (store away from light), and prolonged exposure to air should be minimized to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Shade Strength	100 ± 3%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size (D90)	≤ 2.0 μm
Dispersion Stability	Stable

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