Description

Colour Index Reactive Red 147 is a reactive azo dye belonging to the vinyl sulfone class, widely recognized for its bright red hue and excellent fastness properties. This high-performance dye is engineered to form a covalent bond with cellulose fibers, ensuring superior wash and light fastness in the final textile product. It is an essential component for dye houses and textile manufacturers specializing in cotton, viscose, and other cellulosic materials, providing reliable and vibrant coloration for apparel, home textiles, and industrial fabrics.

Application

• Exhaust Dyeing of Cellulosic Fibers: Primary application for dyeing cotton, rayon, linen, and hemp in batch processes.
• Continuous Dyeing: Used in pad-batch and pad-steam processes for efficient, large-scale fabric production.
• Textile Printing: Formulated for printing inks to create sharp, durable patterns on cellulosic fabrics.
• Leather Coloring: Employed in the dyeing of leather goods where good penetration and fastness are required.
• Paper Staining: Used for specialty paper products requiring colorfastness.
• Biomolecule Staining (Research Grade): Potential use in laboratory settings for staining biological materials.

Basic Information

Product Name	Colour Index Reactive Red 147
CAS No.	71902-16-4
Molecular Formula	C31H19ClN7Na3O15S4
Molecular Weight	984.26 g/mol
Synonyms	Reactive Red 147; Reactive Red VS-R; C.I. Reactive Red 147; Remazol Red RB; Levafix Red E-4BA; Procion Red H-E7B; Vinylsulfone Reactive Dye Red 147; 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 147 is manufactured under a strict quality management system. Every batch is tested to ensure consistent strength, shade, and reactive group content, meeting the high standards required for industrial textile applications. A comprehensive Certificate of Analysis (COA) detailing purity, solubility, and fastness properties is provided with each shipment to guarantee reliable performance in your process.

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) and light-sensitive; containers must be kept sealed when not in use to prevent absorption of atmospheric moisture and degradation.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.2%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%
Fastness Properties (Typical)	Wash: 4-5, Light: 5-6

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