Description

Disperse Red 325 is a high-performance, monoazo-based disperse dye renowned for its excellent color fastness and thermal stability. It is a critical component for achieving vibrant and durable red shades on synthetic fibers, particularly in demanding high-temperature dyeing processes. This product is essential for manufacturers in the textile and plastics industries seeking reliable coloration for polyester, acetate, and nylon materials.

Application

• Primary dyeing of polyester fibers and fabrics, including microfibers.
• Dyeing of cellulose acetate and triacetate fibers.
• Coloration of nylon and polyamide-based textiles.
• Mass coloration (dope dyeing) of synthetic polymers and plastics.
• Printing applications on synthetic fabrics.
• Production of color filters and other optical materials.

Basic Information

Product Name	Disperse Red 325
CAS No.	83929-89-9
Molecular Formula	C18H15ClN4O4
Molecular Weight	386.79 g/mol
Synonyms	Disperse Red 325; C.I. Disperse Red 325; 1-Amino-2-phenoxy-4-hydroxyanthraquinone; 2-[(4-Chloro-2-nitrophenyl)azo]-N,N-bis(2-hydroxyethyl)-5-nitroaniline; Disperse Red SE-4B; Foron Red S-4B; Dianix Red AC-E; Samaron Red HBSL; Kayalon Polyester Red 3BLS
EINECS	Contact for details

Quality Control

Our Disperse Red 325 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for parameters such as color strength, shade, particle size distribution, and dispersion stability. A Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient 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	Reddish-brown powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size	≤ 2.0 μm (Average)
Dispersion Stability	Stable

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