Description

Reactive Yellow 17 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 producing bright, wash-fast yellow shades with excellent reproducibility and good all-around fastness properties. This dye is essential for industrial textile manufacturers and dye houses specializing in cotton, viscose, and other cellulose-based materials, where consistent color yield and durability are critical.

Application

• Exhaust Dyeing of Cellulosic Fibers: Primary application for dyeing cotton, rayon, linen, and other regenerated cellulose fabrics in batch processes.
• Continuous Dyeing Processes: Used in pad-batch, pad-steam, and pad-dry thermofix methods for efficient, large-scale fabric production.
• Yarn Dyeing: Suitable for dyeing cellulose-based yarns in package, beam, or hank dyeing machines.
• Garment Dyeing: Applied for achieving uniform yellow shades in finished cellulose garments.
• Printing: Can be formulated into printing pastes for direct or discharge printing on cellulose textiles.
• Blend Dyeing: Used in combination with other dye classes for coloring cellulose components in polyester/cotton or nylon/cotton blends.

Basic Information

Product Name	Reactive Yellow 17
CAS No.	20317-19-5
Molecular Formula	C26H21ClN7Na3O11S3
Molecular Weight	872.15 g/mol
Synonyms	Reactive Yellow H-E4R; C.I. Reactive Yellow 17; Reactive Brilliant Yellow H-E4R; APOLLOZOL YELLOW H-E4R; Reactive Yellow HE4R; Levafix Yellow E-4R; Remazol Yellow RR; Triazinyl Yellow Dye; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)azo]-, trisodium salt
EINECS	243-737-9

Quality Control

Every batch of Reactive Yellow 17 is manufactured and tested under a strict quality management system. We ensure the product meets high standards for color strength, solubility, shade consistency, and fixation properties. Comprehensive testing includes spectrophotometric analysis for strength and shade, chromatography for purity, and application tests for performance validation. A Certificate of Analysis (COA) detailing all relevant parameters is provided with each shipment to guarantee traceability and compliance with your specifications.

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 heat sources and incompatible materials. The product is light-sensitive (store away from light), and prolonged exposure to high humidity should be avoided to prevent caking.

Specification

Item	Specification
Appearance	Yellow to orange powder
Color Strength	100 ± 3% (Standard)
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Identification (IR)	Conforms to standard
Shade	Conforms to standard
Fixation Rate	≥ 70% (Standard conditions)

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