Description

Disperse Orange 73 is a synthetic organic dye belonging to the disperse dye class, widely recognized for its vibrant orange hue. It is valued for its excellent color fastness, thermal stability, and dispersion properties, which are critical for achieving uniform and durable coloration. This product is essential for manufacturers in the textile and polymer industries seeking high-performance colorants for synthetic fibers.

Application

• Primary dyeing of polyester (PET) fibers and fabrics.
• Coloration of acetate and nylon textiles.
• Mass coloration (dope dyeing) of synthetic polymers and plastics.
• Printing applications on synthetic fiber blends.
• Manufacture of colored masterbatches for plastic products.
• Specialized applications in non-textile substrates requiring disperse dyes.

Basic Information

Product Name	Disperse Orange 73
CAS No.	40690-89-9
Molecular Formula	C18H14N4O5
Molecular Weight	366.33 g/mol
Synonyms	Disperse Orange 73; C.I. Disperse Orange 73; 1-[(2-Cyanoethyl)amino]-4-[(2,4-dinitrophenyl)azo]benzene; 2-[(4-[(2-Cyanoethyl)amino]phenyl)azo]-1,3-dinitrobenzene; Disperse Orange SE-3R; Samaron Orange HRS; Foron Orange SE-3R; C.I. 11132
EINECS	Contact for details

Quality Control

Our Disperse Orange 73 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. The product undergoes rigorous testing for key parameters including color strength, dispersion stability, particle size distribution, and impurity profile. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment to guarantee it meets your specific application 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 strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to reddish-brown 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
Particle Size	> 95% passes 80 mesh

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