Description

C.I. Reactive Red 72 is a high-performance, water-soluble reactive dye belonging to the azo chemical class. It is engineered to form a strong covalent bond with cellulosic fibers, delivering excellent wash and light fastness properties for durable coloration. This product is essential for textile manufacturers and dye houses specializing in the dyeing and printing of cotton, viscose, and other natural fibers.

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 uniform, large-scale fabric production.
• Textile Printing: Formulated for screen and rotary printing inks to create vibrant red shades on fabrics.
• Leather Coloring: Applied in the dyeing of leather goods where reactive properties are beneficial.
• Paper Staining: Used for coloring specialty papers requiring good water fastness.

Basic Information

Product Name	C.I. Reactive Red 72
CAS No.	12226-35-6
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1136.06 g/mol
Synonyms	Reactive Red 72; Reactive Brilliant Red M-8B; C.I. 12226; Reactive Red M-8B; Remazol Brilliant Red M-8B; Levafix Brilliant Red E-4B; Procion Red MX-8B; Dianix Red F-8B; Vinylsulfone Azo Dye; 1,3,6-Naphthalenetrisulfonic acid, 8-[[4-chloro-6-[[2-(sulfooxy)ethyl]sulfonyl]-1,3,5-triazin-2-yl]amino]-5-hydroxy-2-[[1-sulfo-6-[(2-sulfophenyl)azo]-2-naphthalenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our C.I. Reactive Red 72 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent shade, strength, and reactive group content. A comprehensive Certificate of Analysis (COA) is provided, detailing parameters such as purity, solubility, and fastness properties, ensuring it meets the specifications required for industrial textile applications.

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
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 7.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Shade	Conforms to standard
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.