Description

Direct Black 80 is a high-performance, substantive azo dye belonging to the direct dye class, widely recognized for its deep, rich black shade and excellent build-up properties. Its primary value lies in delivering consistent, economical, and wash-fast coloration, particularly on cellulosic fibers like cotton and viscose. This dye is essential for manufacturers in the textile industry seeking reliable and efficient dyeing solutions for fabrics, yarns, and garments, and is also utilized in the paper and leather sectors.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose rayon, and other cellulosic fibers to achieve deep black shades in fabrics, yarns, and ready-made garments.
• Paper Coloring: Used in the production of colored papers, including specialty papers, packaging materials, and decorative items.
• Leather Finishing: Employed in the dyeing of leather goods such as shoes, bags, and upholstery to provide uniform and durable color.
• Ink Formulation: A key component in the manufacture of certain types of inks, including those for flexographic and gravure printing.
• Wood Staining: Applied in woodworking and furniture industries to stain and color wood surfaces.
• Biological Staining (Histology): In some contexts, used as a biological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Direct Black 80
CAS No.	8003-69-8
Molecular Formula	C34H25N9Na4O13S4
Molecular Weight	1023.86 g/mol
Synonyms	Direct Black 80; C.I. Direct Black 80; Direct Black BN; Direct Black G; Direct Black B; Direct Black 80 (C.I. 31600); Pontamine Black BN; Aizen Direct Black BH; Atul Direct Black BN; Dinamine Black BN; Sirius Black BN; Solar Black BN
EINECS	232-325-6

Quality Control

Our Direct Black 80 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive testing, including strength, shade, solubility, and fastness properties, against established industry standards. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your technical requirements.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Black to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Assay (Dye Content)	Min. 95%
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
Shade	Conforms to Standard
Solubility in Water	Conforms
Fastness Properties (Wash, Light, Rub)	Standard Grade

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