Description

Direct Blue 80 is a synthetic, high-strength disazo direct dye belonging to the benzidine derivative class. It is valued for its excellent wash and light fastness properties, providing a deep, vibrant blue shade with strong affinity for cellulosic fibers. This dye is essential for manufacturers in the textile industry requiring consistent, high-quality coloration for cotton, viscose, and paper products. Direct Blue 80 CAS NO 12222-00-3 is a key component for achieving durable and economical blue hues in large-scale dyeing operations.

Application

• Textile Dyeing: Primary application for dyeing cotton, rayon, viscose, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Paper Coloring: Used for tinting and dyeing paper pulp, tissue, and specialty papers to achieve uniform blue coloration.
• Leather Finishing: Employed in the dyeing of leather goods to provide rich, penetrating blue colors.
• Ink Formulation: A colorant component in the manufacture of certain inks for industrial marking and packaging.
• Biological Staining: Utilized in histology and microscopy as a staining agent for biological tissues (specific grades).
• Craft and Educational Dyes: Found in formulations for educational and craft dye kits due to its strong color yield.

Basic Information

Product Name	Direct Blue 80
CAS No.	12222-00-3
Molecular Formula	C34H24N6Na4O16S4
Molecular Weight	996.80 g/mol
Synonyms	Direct Blue 80; C.I. 34215; Direct Blue 2B; Pontamine Blue 2B; Amanil Blue 2B; Chloramine Blue 2B; Sirius Blue 2B; Diazol Blue 2B; Direct Blue 2BN; Atlantic Blue 2B; Benzo Blue 2B; Calcomine Blue 2B
EINECS	235-413-6

Quality Control

Our Direct Blue 80 is manufactured under a stringent quality management system. Each batch is tested to ensure compliance with industry colorant standards for parameters such as shade, strength, solubility, and fastness properties. Certificates of Analysis (COA) documenting purity, dye content, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark Blue to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Dye Content	Min. 90%
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
Shade	Conforms to Standard
Fastness to Light	Good to Very Good
Fastness to Washing	Good
Solubility in Water	Conforms

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