Description

Reactive Red 123 CAS NO 61969-31-1 is a high-performance, fiber-reactive azo dye belonging to the vinyl sulfone class, prized for its brilliant red hue and excellent fastness properties. Its primary value lies in forming a strong covalent bond with cellulose fibers, ensuring exceptional wash and light fastness for durable coloration. This dye is essential for textile manufacturers and dye houses specializing in cotton, viscose, and other cellulosic materials, as well as for research and development in advanced dye chemistry.

Application

• Primary dyeing and printing of cotton fabrics and yarns.
• Coloration of viscose (rayon) and other regenerated cellulose fibers.
• Used in exhaust and continuous dyeing processes for home textiles and apparel.
• Application in the pad-batch and pad-steam dyeing methods for efficient, large-scale production.
• Formulation of specialty dye inks for textile printing.
• Research and development of new dye formulations and color matching.

Basic Information

Product Name	Reactive Red 123
CAS No.	61969-31-1
Molecular Formula	C31H19ClN7Na5O19S6
Molecular Weight	1150.04 g/mol
Synonyms	Reactive Red HE-3B; C.I. Reactive Red 123; Reactive Red HE-3B (C.I. 24190); Vinylsulfone Reactive Red HE-3B; 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-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, sodium salt (1:5)
EINECS	Contact for details

Quality Control

Our Reactive Red 123 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analysis to verify key parameters such as color strength, solubility, and fixation rate. Certificates of Analysis (COA) detailing purity, shade, and physical properties are provided with every shipment to support your quality assurance protocols.

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 performance.

Specification

Item	Specification
Appearance	Reddish-brown powder
Color Strength	Standard Depth ± 3%
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Identification (IR)	Conforms to standard
Fixation Rate	≥ 70% (on cotton)

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