Description

C.I. Reactive Blue 63 is a high-performance, water-soluble reactive dye belonging to the anthraquinone chemical class. It is valued for its bright blue hue and excellent fastness properties, particularly its strong covalent bond with cellulosic fibers, ensuring vibrant and durable coloration. This product is essential for manufacturers in the textile industry seeking reliable and consistent dyeing results for cotton, viscose, and other natural fibers.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cellulosic fibers like cotton, linen, and rayon.
• Textile Printing: Used in printing pastes for creating sharp, wash-fast blue designs on fabric.
• Leather Coloring: Imparts color to leather goods where reactive dye properties are beneficial.
• Paper Staining: Employed for coloring specialty papers where high color fastness is required.
• Research & Development: Serves as a reference standard or intermediate in chemical synthesis and dye research.
• Industrial Colorant: Potential use in coloring non-textile materials where a reactive blue colorant is specified.

Basic Information

Product Name	C.I. Reactive Blue 63
CAS No.	39404-52-9
Molecular Formula	C29H19ClN7O11S3
Molecular Weight	804.10 g/mol
Synonyms	Reactive Blue 63; Reactive Blue K-GL; C.I. 61210; Remazol Brilliant Blue R; Levafix Brilliant Blue E-B; Procion Blue H-ERD; Drimarene Brilliant Blue K-2RL; Vinylsulfone Reactive Dye Blue 63; 1-Amino-4-[[4-[(2-bromo-6-chloro-4-sulfophenyl)azo]-7-sulfo-2-naphthalenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic Acid
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Blue 63 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including color strength, shade, solubility, and reactive group content. Certificates of Analysis (COA) documenting purity, physical properties, and application test results are available upon request to support your quality assurance processes.

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 hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Dusting Property	Low

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