Description

Direct Red 69 is a synthetic azo dye belonging to the direct dye class, valued for its strong affinity to cellulosic fibers. Its primary commercial importance lies in providing a bright, wash-fast red coloration in textile dyeing and printing processes. This product is essential for manufacturers in the textile, leather, and paper industries seeking consistent and reliable colorants for their production lines. Direct Red 69, identified by CAS No. 5915-58-2, is supplied to meet the stringent quality demands of global industrial applications.

Application

Direct Red 69 is a versatile dye with several key industrial applications:

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fabrics to achieve a vivid red shade.
• Leather Coloring: Used in the tanning industry for dyeing leather goods, providing good penetration and color fastness.
• Paper Staining: Employed in the production of colored papers, tissues, and packaging materials.
• Ink Formulation: A component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Wood Staining: Applied for coloring wood and related products.

Basic Information

Product Name	Direct Red 69
CAS No.	5915-58-2
Molecular Formula	C29H19N5Na2O8S2
Molecular Weight	695.66 g/mol
Synonyms	Direct Red 69; C.I. 35780; Direct Fast Red 7B; Direct Red 7B; Direct Red 7BL; Direct Red BWS; Pontamine Fast Red 7BL; Sirius Red 7B; Atul Direct Fast Red 7B; Amanil Fast Red 7B
EINECS	227-653-8

Quality Control

Our Direct Red 69 is manufactured under a strict quality management system. Each batch is tested to ensure it meets precise specifications for color strength, shade, solubility, and impurity profiles. Certificates of Analysis (COA) documenting these parameters are available upon request, providing full traceability and compliance assurance for your quality 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

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

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