Description

Reactive Red 76 is a high-purity, reactive azo dye belonging to the vinyl sulfone class, widely recognized for its excellent color fastness and brilliant red hue. This compound is specifically engineered for covalent bonding with cellulosic fibers, ensuring vibrant, wash-resistant coloration critical for demanding textile applications. It is an essential component for dye houses and textile manufacturers globally seeking reliable, high-performance red dyes for cotton, viscose, and other natural fabrics.

Application

• Textile Dyeing (Exhaust Process): Primary application for dyeing cotton, viscose, and other cellulosic fibers in batch dyeing machines.
• Textile Printing: Used in the printing paste formulation for creating sharp, durable red patterns on fabric.
• Continuous Dyeing (Pad-Batch/Steam): Suitable for continuous dyeing ranges, offering efficient fixation and level dyeing.
• Leather Coloring: Applied for dyeing leather goods where bright, fast colors are required.
• Paper Staining: Used in specialty paper production for achieving colored paper stock.
• Research & Development: Serves as a reference standard or intermediate in chemical research and dye synthesis studies.

Basic Information

Product Name	Reactive Red 76
CAS No.	12270-84-7
Molecular Formula	C25H14Cl2N6Na2O11S3
Molecular Weight	819.54 g/mol
Synonyms	Reactive Red VS-R; C.I. Reactive Red 76; Remazol Red RB; Levafix Red E-4BA; Procion Red H-EXL; Vinylsulfone Reactive Red 76; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, sodium salt (1:2)
EINECS	Contact for details

Quality Control

Our Reactive Red 76 is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and rigorous checks for insolubles and heavy metals. A Certificate of Analysis (COA) detailing purity, strength, and physical parameters is provided with each shipment to ensure it meets the specifications required for consistent industrial dyeing and printing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a temperature between 15-25°C. Keep away from strong oxidizing agents and moisture to maintain product stability and performance.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Color Strength	≥ 98% (vs. Standard)
Purity (HPLC)	≥ 90%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.2%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%

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