Description

Reactive Yellow 125 is a high-performance, water-soluble reactive dye belonging to the azo dye class, identified by CAS No. 72509-99-0. It is valued for its excellent color fastness, bright hue, and strong covalent bonding with cellulosic fibers, ensuring vibrant and durable coloration. This dye is essential for manufacturers in the textile industry seeking reliable and efficient coloring solutions for cotton, viscose, and other natural fibers.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and other cellulosic fabrics.
• Yarn Dyeing: Used for coloring cotton and viscose yarns in package, beam, and hank dyeing machines.
• Garment Dyeing: Suitable for producing fashionable, uniformly dyed finished garments.
• Printing Pastes: A key component in the formulation of printing inks and pastes for textile printing.
• Leather Coloring: Applied in the dyeing of leather goods to achieve a consistent yellow shade.
• Paper Staining: Used in specialty paper production for tinting and coloring.

Basic Information

Product Name	Reactive Yellow 125
CAS No.	72509-99-0
Molecular Formula	C29H19ClN7Na3O11S3
Molecular Weight	872.09 g/mol
Synonyms	Reactive Yellow M-5R; C.I. Reactive Yellow 125; Reactive Golden Yellow M-5R; Reactive Yellow H-5R; Yellow 125 Reactive Dye; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-, trisodium salt; Reactive Brilliant Yellow M-5R
EINECS	Contact for details

Quality Control

Our Reactive Yellow 125 is manufactured under a stringent quality management system. Every batch undergoes comprehensive testing for critical parameters including color strength, shade, solubility, and fixation rate to ensure consistency and performance. Certificates of Analysis (COA) confirming compliance with industry specifications are available upon request.

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 incompatible materials and sources of ignition. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Yellow to orange powder
Color Strength	≥ 100% (Standard)
Solubility (in Water)	≥ 100 g/L (50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%
Identification (IR)	Conforms to standard
Heavy Metals (as Pb)	≤ 50 ppm

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