Description

Basic Red 69 is a synthetic cationic (basic) dye belonging to the azo chemical class, identified by CAS NO 71838-79-4. It is valued for its strong affinity to substrates with anionic surfaces, providing vibrant and durable coloration. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking high-performance colorants for polyacrylonitrile fibers, modified nylons, and paper coatings.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers (polyacrylonitrile) and certain modified polyamide fibers, offering excellent wash and light fastness.
• Paper Coloring: Used in the surface coating and tinting of specialty papers, including decorative and security papers.
• Ink Manufacturing: A key colorant for the formulation of inks used in flexographic, inkjet, and other specialty printing processes.
• Leather Finishing: Employed in the dyeing of leather goods to achieve consistent and deep red shades.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Coloring of certain plastics and polymers during mass coloration processes.

Basic Information

Product Name	Basic Red 69
CAS No.	71838-79-4
Molecular Formula	C21H21ClN6O3S
Molecular Weight	496.95 g/mol
Synonyms	Basic Red 69; C.I. Basic Red 69; Aizen Cathilon Red 5GH; Astrazon Red FBL; Maxilon Red M-RBL; Sevron Red L; 1,3-Benzenedicarboxamide, N1,N3-bis[7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl]-, hydrochloride; Cationic Red 5GH
EINECS	Contact for details

Quality Control

Every batch of Basic Red 69 is manufactured and tested under a strict quality management system. We ensure the product meets high-purity standards suitable for industrial applications, with key parameters including color strength, shade, and solubility rigorously verified. A Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to guarantee consistency and performance.

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 container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to standard
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
pH (1% Solution)	5.0 - 7.0

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