Description

C.I. Direct Blue 201 is a high-performance, water-soluble direct dye belonging to the azo chemical class. This compound is valued for its strong affinity to cellulosic fibers, providing excellent wash and light fastness properties in dyeing applications. It is primarily used by manufacturers in the textile, paper, and leather industries seeking reliable and vibrant blue coloration.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers.
• Paper Coloring: Used in the production of colored papers, tissues, and specialty packaging.
• Leather Finishing: Imparts color to leather goods in the tanning industry.
• Ink Formulation: A colorant component for certain types of aqueous inks.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Craft and Educational Dyes: Used in non-industrial coloring applications.

Basic Information

Product Name	C.I. Direct Blue 201
CAS No.	86437-47-0
Molecular Formula	C32H20CuN8O13S3·xNa
Molecular Weight	Contact for details
Synonyms	Direct Blue 201; C.I. 51320; Direct Blue 2B; Amanil Sky Blue 2B; Atul Direct Sky Blue 2B; Dinamine Sky Blue 2B; Direct Sky Blue 2B; Sirius Supra Blue 2B; Solar Sky Blue 2B; Triamine Sky Blue 2B
EINECS	Contact for details

Quality Control

Our C.I. Direct Blue 201 is manufactured under a strict quality management system. Each batch is tested to ensure consistent shade, strength, and solubility, meeting the specifications required for industrial dyeing processes. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment.

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 incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Blue to bluish-gray powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Solubility in Water	Conforms
Fastness Properties	Contact for details

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