Description

C.I. Reactive Red 82 is a high-performance, reactive azo dye designed for covalent bonding with cellulosic fibers. This compound matters for its excellent color fastness, brilliant red hue, and efficient fixation properties, ensuring durable and vibrant coloration. It is primarily needed by manufacturers in the textile industry for dyeing and printing cotton, viscose, and other natural fibers, as well as for research and development in specialty colorant applications.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, rayon, and other cellulosic fabrics.
• Textile Printing: Used in printing pastes for creating sharp, wash-fast patterns on natural fiber textiles.
• Leather Coloring: Imparts durable color to leather goods where reactive dye properties are beneficial.
• Paper Staining: Employed for coloring paper products requiring good water fastness.
• Biomolecule Labeling: Potential use in research for tagging proteins or other biomolecules due to its reactive group.
• Ink Formulation: A component in specialty inks where chemical bonding to the substrate is desired.

Basic Information

Product Name	C.I. Reactive Red 82
CAS No.	61969-25-3
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1184.37 g/mol
Synonyms	Reactive Red 82; Reactive Brilliant Red M-8B; C.I. 18205; Reactive Red M-8B; Remazol Brilliant Red F-3B; Levafix Brilliant Red E-4BA; Procion Red H-8BN; Drimarene Brilliant Red K-5B; Vinylsulfone Azo Dye; 2,7-Naphthalenedisulfonic acid, 4-[[4-chloro-6-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Red 82 adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance. Each lot is tested for critical parameters including color strength, shade, solubility, and reactive group content. Certificates of Analysis (COA) detailing purity, physical properties, and application performance are available upon request to support your quality assurance and regulatory compliance needs.

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 incompatible materials. The product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Purity (HPLC)	≥ 90%
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 25°C)
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70% (Standard conditions)

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