Description

Direct Blue 200 is a synthetic, high-strength disazo direct dye belonging to the benzidine derivative class. This dye is valued for its excellent substantivity to cellulosic fibers, providing deep, vibrant blue shades with good wash and light fastness properties. It is primarily used in the textile industry for dyeing and printing cotton, viscose, and other regenerated fibers, as well as in the paper and leather industries. Our supply of Direct Blue 200 CAS NO 12217-57-1 ensures consistent quality and reliable performance for demanding industrial applications.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, rayon, and other cellulosic fabrics.
• Textile Printing: Used in printing pastes for creating sharp, durable blue patterns on natural fiber textiles.
• Paper Coloring: Imparts a strong blue color to paper pulp for the production of colored papers and boards.
• Leather Finishing: Employed in dyeing leather goods, providing deep penetration and uniform coloration.
• Ink Formulation: A colorant component in certain types of inks for specialty applications.
• Biological Staining: Potential use as a histological stain in laboratory settings, though specific grades are required.

Basic Information

Product Name	Direct Blue 200
CAS No.	12217-57-1
Molecular Formula	C40H23N7O13S3.3Na
Molecular Weight	~1023.86 g/mol (as trisodium salt)
Synonyms	Direct Blue 200; C.I. Direct Blue 200; C.I. 51315; Direct Blue 2B; Direct Blue B; Direct Navy Blue 2B; Direct Navy Blue B; Amanil Navy Blue 2B; Atul Direct Navy Blue 2B; Benzamine Blue 2B; Chloramine Blue 2B; Diphenyl Blue 2B; Sirius Blue 2B; Solophenyl Navy Blue 2B; Solar Navy Blue 2B
EINECS	Contact for details

Quality Control

Our Direct Blue 200 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing the specific results for purity, ash content, moisture, and fastness properties is provided with every shipment. We adhere to relevant industry standards to meet the specific requirements of our global clientele.

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 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
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Ash Content	≤ 30.0%
Solubility in Water	Conforms
Fastness to Light	≥ 5-6 (Typical)
Fastness to Washing	≥ 3-4 (Typical)

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