Description

Disperse Orange 31:1 is a high-performance, monoazo-based disperse dye widely used in synthetic textile coloration. Its primary value lies in providing excellent color fastness, brilliant shade, and reliable batch-to-batch consistency for industrial dyeing processes. This product is essential for manufacturers in the textile and polymer industries seeking to color polyester, acetate, and nylon fibers effectively. Its formulation is designed to meet the rigorous demands of modern, high-temperature dyeing applications.

Application

• Primary dyeing of polyester fibers and fabrics.
• Dyeing of secondary cellulose acetate and triacetate fibers.
• Coloration of nylon and polyamide-based textiles.
• High-temperature, high-pressure (HTHP) dye bath applications.
• Continuous thermosol dyeing processes for polyester/cotton blends.
• Production of dyed polyester yarns for automotive and home furnishing textiles.
• As a colorant in the mass coloration of certain plastics.
• Used in laboratory research and development of new dye formulations.

Basic Information

Product Name	Disperse Orange 31:1
CAS No.	163751-76-6
Molecular Formula	C18H14ClN5O4
Molecular Weight	399.79 g/mol
Synonyms	Disperse Orange 31:1; C.I. Disperse Orange 31:1; Disperse Orange SE-2R; Disperse Orange H-2R; 2-[(4-((2-Chloro-4-nitrophenyl)azo)phenyl)ethylamino]ethanol; 1-(2-Hydroxyethylamino)-2-[(4-((2-chloro-4-nitrophenyl)azo)phenyl)amino]ethane; Akasperse Orange H-2R; Amarlene Orange F2R
EINECS	Contact for details

Quality Control

Our Disperse Orange 31:1 is manufactured under a strict quality management system to ensure it meets the high standards required for industrial textile applications. Every batch is tested for critical parameters including shade, strength, dispersion stability, and particle size distribution. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee traceability and compliance.

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 to maintain color integrity and shelf life.

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	≤ 5.0%
Ash Content	≤ 1.0%
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.