Description

Disperse Red 56 is a high-performance synthetic dye belonging to the disperse azo dye class, widely recognized for its vibrant red hue and excellent fastness properties. This compound is essential for achieving durable and colorfast shades on synthetic hydrophobic fibers, particularly polyester and its blends. It is a critical raw material for textile dyeing and printing operations, as well as for manufacturers of specialty inks and colorants. The product is supplied under the identifier CAS NO 12637-13-7.

Application

• Textile Dyeing: Primary application for dyeing polyester (PET), acetate, and triacetate fibers to produce a bright red shade with good wash and light fastness.
• Textile Printing: Used in printing pastes for synthetic fabrics, offering sharp definition and color yield.
• Plastics Coloring: Employed as a colorant for mass coloration of certain thermoplastics, including polystyrene and polycarbonate, where high-temperature stability is required.
• Ink Manufacturing: A pigment source for specialty inks, such as those used in transfer printing and some inkjet formulations.
• Research & Development: Serves as a standard or intermediate in chemical research, analytical method development, and for quality control in dye production.

Basic Information

Product Name	Disperse Red 56
CAS No.	12637-13-7
Molecular Formula	C₁₈H₁₄N₄O₅
Molecular Weight	366.33 g/mol
Synonyms	1-Amino-2-phenoxy-4-hydroxyanthraquinone; C.I. Disperse Red 56; Disperse Red S-R; Samaron Red FBL; Foron Red S-R; Artisil Red S-R; Palanil Red BF; Dianix Red FBL; Amacron Red S-R; Intrasil Red FBL
EINECS	235-729-8

Quality Control

Our Disperse Red 56 is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise specifications for color strength, shade, and purity, consistent with industry standards for textile dyes. A comprehensive Certificate of Analysis (COA) detailing parameters such as purity, ash content, and particle size distribution is provided with each shipment to guarantee batch-to-batch consistency and performance reliability.

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	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Ash Content	≤ 0.5%
Moisture 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.