Description

Reactive Yellow 57 is a high-performance, water-soluble azo dye belonging to the reactive dye class, designed for covalent bonding with cellulosic fibers. Its primary value lies in providing brilliant, wash-fast yellow shades with excellent reproducibility and good all-around fastness properties. This dye is essential for textile manufacturers and dye houses specializing in the coloration of cotton, viscose, and other cellulose-based materials, where vibrant and durable colors are critical for product quality.

Application

• Exhaust dyeing of cotton and viscose yarns and fabrics.
• Continuous pad-dyeing and pad-batch processes for woven and knitted cellulosic textiles.
• Printing applications on cellulosic substrates to achieve sharp, bright yellow designs.
• Used in combination with other reactive dyes to produce a wide spectrum of green, orange, and brown shades.
• Suitable for dyeing in various equipment, including jet, overflow, and beam dyeing machines.
• Application in the home textile and apparel industries for products requiring high colorfastness to washing and light.

Basic Information

Product Name	Reactive Yellow 57
CAS No.	61969-35-5
Molecular Formula	C26H18ClN7Na4O16S4
Molecular Weight	984.19 g/mol
Synonyms	Reactive Yellow M-5R; C.I. Reactive Yellow 57; Reactive Brilliant Yellow M-5R; Reactive Yellow H-5R; Yellow 57 Reactive Dye; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, tetrasodium salt; APOLLO Reactive Yellow H-5R
EINECS	Contact for details

Quality Control

Our production of Reactive Yellow 57 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and fixation properties. Certificates of Analysis (COA) documenting purity, physical properties, and application test results are available upon request to support your quality assurance and production planning.

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. The original container is the best storage vessel to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange powder
Color Strength	100 ± 3% (vs. Standard)
Solubility in Water	≥ 100 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Moisture Content	≤ 5.0%
Identification (IR)	Conforms to standard
Fixation Rate	≥ 70% (Typical on Cotton)
Fastness Properties	Contact for details

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