Description

C.I. Reactive Blue 78 is a high-purity, reactive anthraquinone dye used for coloring cellulosic fibers. Its primary value lies in providing excellent wash and light fastness properties, creating vibrant and durable blue shades. This product is essential for manufacturers in the textile industry, particularly for dyeing and printing cotton, viscose, and other natural fibers.

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, defined blue patterns on natural fiber textiles.
• Leather Coloring: Employed in the dyeing of leather goods to achieve consistent blue coloration.
• Paper Staining: Suitable for specialty paper products requiring colorfast blue hues.
• Research & Development: Serves as a standard or intermediate in chemical and dyestuff research laboratories.

Basic Information

Product Name	C.I. Reactive Blue 78
CAS No.	61968-96-5
Molecular Formula	C29H19ClN7O11S3·xNa
Molecular Weight	Approx. 840.17 (Free Acid)
Synonyms	Reactive Blue 78; Reactive Blue M-2G; C.I. 621521; Remazol Brilliant Blue R; Levafix Brilliant Blue E-B; Drimarene Brilliant Blue R-BL; Sumifix Brilliant Blue R; Vinylsulfone Reactive Dye Blue 78; 1-Amino-4-[3-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-sulfophenylamino]anthraquinone-2-sulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our C.I. Reactive Blue 78 is manufactured under a strict quality management system. Every batch is tested to ensure consistent strength, shade, and reactive group content, meeting the specifications required for industrial textile applications. A Certificate of Analysis (COA) detailing purity, solubility, and colorimetric data is provided with each 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Shade	Conforms to Standard
Fastness Properties	Wash: ≥ 4; Light: ≥ 5

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