Description

C.I. Reactive Red 158 is a high-performance, water-soluble reactive dye belonging to the azo chemical class, designed for covalent bonding with cellulosic fibers. Its primary value lies in delivering brilliant, wash-fast red shades with excellent reproducibility and cost-effectiveness in industrial dyeing processes. This product is essential for textile manufacturers, particularly those involved in the exhaust and continuous dyeing of cotton, viscose, and other natural fibers, where consistent color yield and fastness properties are critical.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarn, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous Dyeing: Used in pad-batch and pad-steam processes for efficient, large-scale fabric coloration.
• Viscose and Linen Dyeing: Effective for dyeing other cellulosic substrates to achieve vibrant red hues.
• Union Dyeing: Can be applied in combination with other dye classes for coloring cotton blends.
• Garment Dyeing: Suitable for batch dyeing of finished apparel items.
• Home Textiles: Used for dyeing towels, bed linens, and other household textiles requiring good wet fastness.

Basic Information

Product Name	C.I. Reactive Red 158
CAS No.	64104-00-3
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1136.37 g/mol
Synonyms	Reactive Red 158; Reactive Red M-3BE; Reactive Red KE-3B; C.I. 182525; Remazol Red 3BS; Levafix Red CA; Procion Red H-EXL; Dianix Red CC; Sumifix Red 3BF; Drimarene Red K-4BL
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Red 158 adheres to stringent quality management protocols to ensure batch-to-batch consistency in shade, strength, and solubility. Every lot is tested against key parameters including color strength, fixation rate, and fastness properties. Certificates of Analysis (COA) detailing purity, physical form, and application performance are available upon request to support your quality assurance and production planning.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent caking or reduction in solubility due to moisture absorption.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%
Dusting Grade	Low dusting

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