Description

Reactive Red 3 is a synthetic reactive dye belonging to the azo dye class, identified by CAS No. 23211-47-4. This high-performance dye is engineered to form a covalent bond with cellulosic fibers, delivering excellent wash and light fastness properties. It is a critical component for textile manufacturers and dye houses seeking vibrant, durable red shades on cotton, viscose, and other natural fabrics.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and viscose yarns and fabrics.
• Printing Pastes: Used in the formulation of printing inks and pastes for textile printing applications.
• Leather Coloring: Employed in the dyeing of leather goods to achieve consistent and fast red colors.
• Paper Staining: Suitable for coloring paper products where a strong, reactive red hue is required.
• Research & Development: Serves as a standard or intermediate in chemical research and dye synthesis studies.
• Educational Use: Used in academic and industrial training for demonstrations of reactive dye chemistry and application techniques.

Basic Information

Product Name	Reactive Red 3
CAS No.	23211-47-4
Molecular Formula	C26H17ClN7Na3O11S3
Molecular Weight	837.06 g/mol
Synonyms	Reactive Red 3; Reactive Brilliant Red 3B; C.I. Reactive Red 3; Procion Red H-3B; Remazol Brilliant Red 3B; Levafix Brilliant Red E-3B; Reactive Red 3B; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-, trisodium salt
EINECS	245-492-7

Quality Control

Our Reactive Red 3 is manufactured under a strict quality management system. Each batch is tested to ensure consistent strength, shade, and reactivity, meeting the high standards required for industrial dyeing processes. A comprehensive Certificate of Analysis (COA) detailing purity, strength, and impurity profiles is provided with every shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Strength	100 ± 3%
Shade	Conforms to standard
Water Content (KF)	Max. 5.0%
pH (1% Solution)	6.0 - 8.0
Solubility in Water	Conforms

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