Description

Disperse Red 146 is a high-performance, monoazo-based disperse dye renowned for its excellent color fastness and brilliant red hue. It is a critical component for achieving durable and vibrant coloration on synthetic fibers, particularly polyester and its blends. This product is essential for manufacturers in the textile and specialty plastics industries seeking reliable, high-quality colorants for demanding applications.

Application

• Primary dyeing of polyester fibers and fabrics for apparel and home textiles.
• Printing on polyester and polyester/cellulose blend fabrics.
• Coloration of polyester yarns and threads.
• Mass coloration (dope dyeing) of synthetic polymers, including certain plastics.
• Used in the formulation of high-grade ink for specialized printing applications.
• Suitable for automotive textiles requiring high light and wash fastness.
• Potential use in the coloration of other hydrophobic synthetic fibers like acetate and nylon.

Basic Information

Product Name	Disperse Red 146
CAS No.	59763-30-3
Molecular Formula	C20H13N5O6
Molecular Weight	419.35 g/mol
Synonyms	Disperse Red 146; C.I. Disperse Red 146; 1-[(2-Cyanoethyl)amino]-4-[(4-nitrophenyl)azo]anthraquinone; 1-[(2-Cyanoethyl)amino]-4-[(4-nitrophenyl)diazenyl]anthraquinone; Disperse Red SE-4B; Samaron Red F3BS; Foron Red SE-4B; Dianix Red AC-E
EINECS	Contact for details

Quality Control

Our Disperse Red 146 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against stringent internal specifications for key parameters such as color strength, shade, dispersion stability, and fastness properties. A Certificate of Analysis (COA) documenting purity, physical form, and performance metrics is available for every shipment to support your quality assurance protocols.

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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Dispersion Stability	Passes test

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