Description

Reactive Red 239 is a high-performance, water-soluble azo-based reactive dye designed for demanding coloration processes. Its primary value lies in its excellent color fastness, high fixation yield, and brilliant red hue, making it a critical component for achieving durable and vibrant shades on cellulosic fibers. This product is essential for textile manufacturers, dye houses, and chemical suppliers serving the global market for high-quality apparel, home textiles, and industrial fabrics.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarns, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous Dyeing (Pad-Batch/Steam): Used in pad-dry-chemical-pad-steam and cold pad-batch processes for efficient, large-scale fabric production.
• Dyeing of Viscose/Rayon: Provides bright and even shades on regenerated cellulosic fibers.
• Dyeing of Linen and Hemp: Suitable for achieving good penetration and fastness on other natural cellulosic materials.
• Tie-Dye and Garment Dyeing: Used in smaller-scale, artisanal, or finished garment dyeing applications for special effects.
• Ink Formulation for Textile Printing: Can be incorporated into inks for digital or screen printing on pretreated fabrics.

Basic Information

Product Name	Reactive Red 239
CAS No.	89157-03-9
Molecular Formula	C31H19ClN7Na4O15S4
Molecular Weight	1027.86 g/mol
Synonyms	Reactive Red HE-3B; C.I. Reactive Red 239; Reactive Red HE3B; Red HE3B; Novacron Red HE-3B; Levafix Red E-3B; Remazol Red HE-3B; Sumifix Red HE-3B
EINECS	Contact for details

Quality Control

Our Reactive Red 239 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent shade, strength, and reactivity performance. Key parameters such as color strength, fixation rate, and solubility are rigorously controlled. A Certificate of Analysis (COA) detailing purity, physical properties, and application test results is provided with each shipment to guarantee it meets your specific technical requirements.

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). This product is hygroscopic (moisture-sensitive); keep the original container sealed to prevent caking or hydrolysis due to atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown powder
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%
Dusting Grade	Low-dusting
Identification (IR)	Conforms to Standard

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