Description

Direct Green 85 is a synthetic, high-strength direct dye belonging to the azo chemical class, widely recognized for its excellent affinity to cellulosic fibers. Its primary value lies in delivering a deep, vibrant green shade with good wash and light fastness properties, making it a cost-effective coloring solution for industrial applications. This product is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent dyeing performance for their bulk production processes.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Leather Coloring: Used for dyeing leather goods, providing rich and uniform green coloration.
• Paper Staining: Employed in the production of colored papers, tissues, and specialty packaging materials.
• Ink Formulation: Serves as a colorant in the manufacturing of certain types of inks for industrial marking and printing.
• Wood Staining: Applied for coloring wood and wood-based products to achieve decorative green finishes.
• Biological Staining (Industrial Grade): May be utilized as a histological stain in non-clinical, industrial laboratory settings.

Basic Information

Product Name	Direct Green 85
CAS No.	72390-60-4
Molecular Formula	C34H23N7Na4O16S4
Molecular Weight	1085.88 g/mol
Synonyms	Direct Green B; Direct Green GS; C.I. Direct Green 85; Direct Green 85 (C.I. 30387); Direct Dark Green; Direct Green G; Direct Green S; Benzo Dark Green B
EINECS	Contact for details

Quality Control

Every batch of Direct Green 85 is manufactured and tested under a strict quality management system to ensure consistent shade, strength, and solubility. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing parameters such as color strength, shade, solubility, and impurity content are available upon request.

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 stability.

Specification

Item	Specification
Appearance	Dark green to black 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%
Solubility in Water	Conforms
pH (1% Solution)	6.0 - 8.0

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