Description

Disperse Yellow 240 is a high-performance synthetic organic dye belonging to the disperse dye class, identified by CAS NO 125934-88-5. It is engineered to deliver excellent color fastness, thermal stability, and dispersion properties, which are critical for achieving consistent and vibrant coloration. This dye is primarily required by manufacturers in the textile and polymer industries for dyeing and printing synthetic fibers, particularly polyester and its blends, to meet demanding quality and performance standards.

Application

• Primary dyeing of polyester fibers and yarns.
• Printing applications on polyester fabrics.
• Coloration of polyester-cotton and other synthetic fiber blends.
• Mass coloration of plastics and synthetic polymers.
• Manufacturing of colored masterbatches for synthetic materials.
• Specialized applications in non-textile areas such as inks and coatings.

Basic Information

Product Name	Disperse Yellow 240
CAS No.	125934-88-5
Molecular Formula	C18H14ClN5O4
Molecular Weight	399.79 g/mol
Synonyms	Disperse Yellow 240; C.I. Disperse Yellow 240; 2-[(4-Amino-2-nitrophenyl)azo]-N-(2-cyanoethyl)-3-oxobutanamide; 1-[[4-[(2-Cyanoethyl)amino]-2-nitrophenyl]azo]acetoacetamide; Disperse Yellow SE-4G; Foron Yellow SE-4G; Samaron Yellow 4G; Dianix Yellow 4G-SE; Kayalon Polyester Yellow 4G-SE; Terasil Yellow 4G
EINECS	Contact for details

Quality Control

Our Disperse Yellow 240 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive testing including purity assay, shade strength, dispersion stability, and fastness properties. 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 room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Shade	Standard
Strength	100 ± 3%
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.