Description

Direct Red 23 is a synthetic anionic azo dye belonging to the direct dye class, valued for its strong affinity to cellulosic fibers. Its primary commercial value lies in providing a bright, bluish-red shade with good wash fastness properties on cotton, viscose, and other natural fibers. This dye is essential for manufacturers in the textile industry, particularly for dyeing and printing applications where deep, vibrant reds are required.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers to achieve a bluish-red color.
• Paper Coloring: Used in the production of colored papers, tissues, and paperboard where a stable red hue is needed.
• Leather Finishing: Employed in the dyeing of leather goods, such as bags, shoes, and upholstery.
• Ink Formulation: A colorant component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Craft and Specialty Dyes: Suitable for use in craft projects and for dyeing natural materials like wood and basket-weaving fibers.

Basic Information

Product Name	Direct Red 23
CAS No.	3441-14-3
Molecular Formula	C35H25N7Na2O10S2
Molecular Weight	813.78 g/mol
Synonyms	Direct Fast Scarlet 4BA; C.I. 29160; Pontamine Fast Scarlet 4BA; Direct Scarlet 4B; Direct Red 2B; Benzo Scarlet 4BS; Sirius Scarlet 4BA; Atul Direct Fast Scarlet 4BA
EINECS	222-339-5

Quality Control

Our Direct Red 23 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing to ensure it meets precise color strength, shade, and purity specifications. A Certificate of Analysis (COA) detailing parameters such as assay, solubility, and impurity profile is provided with every shipment to guarantee consistency and performance for your industrial processes.

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 incompatible materials and sources of ignition. Ensure the container is kept tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Shade	Conforms to standard
Fastness Properties	Contact for details

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