Description

Reactive Yellow 3 is a high-purity, water-soluble anionic dye belonging to the reactive azo dye class. It is valued for its ability to form a covalent bond with cellulosic fibers, resulting in excellent wash and light fastness properties. This product is essential for textile manufacturers and dye houses specializing in the vibrant and durable coloration of cotton, viscose, and other natural fabrics.

Application

• Primary Textile Dyeing: Exhaust and continuous dyeing of cotton, linen, and regenerated cellulose fibers.
• Textile Printing: Used in printing pastes for creating sharp, bright yellow patterns on cellulosic fabrics.
• Leather Coloring: Application in dyeing leather goods where good fastness properties are required.
• Paper Staining: Coloring of paper pulp for specialty papers and decorative applications.
• Research & Development: Serves as a standard or intermediate in chemical synthesis and dye research laboratories.

Basic Information

Product Name	Reactive Yellow 3
CAS No.	6539-67-9
Molecular Formula	C25H18ClN7Na3O11S3
Molecular Weight	872.11 g/mol
Synonyms	Reactive Yellow 3; C.I. Reactive Yellow 3; Reactive Brilliant Yellow 3G; Reactive Light Yellow 3G; Reactive Yellow 3G; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(4-methoxyphenyl)azo]-, trisodium salt; Reactive Yellow M-3G; Levafix Yellow E-3G
EINECS	229-459-5

Quality Control

Our Reactive Yellow 3 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent strength, shade, and reactivity, meeting the high standards required for industrial textile applications. A comprehensive Certificate of Analysis (COA) detailing purity, strength, and impurity profiles is provided with each 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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Strength	98 - 102% (vs. Standard)
Water Content	Max. 5.0%
pH (1% Solution)	6.0 - 8.0
Solubility in Water	Completely soluble

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