Description

Reactive Red 63 is a high-purity, reactive azo dye designed for demanding textile coloration processes. Its primary value lies in its ability to form a strong covalent bond with cellulose fibers, resulting in exceptional wash and light fastness properties. This dye is essential for manufacturers in the textile industry seeking vibrant and durable red shades on cotton, viscose, and other cellulosic fabrics.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, rayon, linen, and other cellulosic fibers.
• Fabric Printing: Used in printing pastes for creating sharp, colorfast red patterns on cellulosic textiles.
• Leather Coloring: Imparts durable red coloration to leather goods where reactive dyeing is applicable.
• Paper Staining: Employed for coloring specialty papers requiring good water fastness.
• Research & Development: Serves as a reference standard or intermediate in chemical and dyestuff research laboratories.

Basic Information

Product Name	Reactive Red 63
CAS No.	12237-09-1
Molecular Formula	C29H19ClN7Na3O19S6
Molecular Weight	1135.28 g/mol
Synonyms	Reactive Red HE-3B; C.I. Reactive Red 63; Reactive Red HE-3B (C.I. 18205); Remazol Red HE-3B; Levafix Red E-3B; Procion Red HE-3B; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-methoxy-5-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-, trisodium salt
EINECS	Contact for details

Quality Control

Our Reactive Red 63 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is tested against stringent internal specifications for key parameters such as color strength, solubility, and reactive group content. A Certificate of Analysis (COA) detailing purity, shade, and application performance 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 strong oxidizing agents and moisture to maintain product stability and shelf life.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	≥ 100% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Shade	Conforms to standard

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