Description

C.I. Reactive Yellow 98 is a high-performance, water-soluble reactive dye belonging to the vinyl sulfone class, known for its bright and vivid yellow hue. It is a critical component for achieving excellent wash and light fastness on cellulosic fibers like cotton and viscose. This product is essential for textile manufacturers, dye houses, and chemical distributors serving the global fabric production and garment industry. Its consistent quality ensures reliable coloration and batch-to-batch reproducibility in demanding industrial applications.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarns, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous Dyeing/Pad-Batch Processes: Used in pad-steam and pad-dry-chemical pad-steam processes for efficient, large-scale fabric coloration.
• Cellulosic Fiber Blends: Effective for dyeing blends of cotton with polyester or other synthetic fibers using appropriate dyeing methods.
• Textile Printing: Formulated for use in printing pastes for direct and discharge printing on cellulose-based textiles.
• Leather Dyeing: Employed to dye leather substrates, providing vibrant and durable color.
• Paper Coloring: Used in specialty paper production where high color fastness is required.

Basic Information

Product Name	C.I. Reactive Yellow 98
CAS No.	61814-54-8
Molecular Formula	C29H19ClN7Na3O11S3
Molecular Weight	872.09 g/mol
Synonyms	Reactive Yellow 98; Reactive Yellow K-4G; Reactive Yellow KE-4G; Reactive Yellow P-4G; C.I. 18972; Vinylsulfone Reactive Yellow 98; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, trisodium salt
EINECS	Contact for details

Quality Control

Our C.I. Reactive Yellow 98 is manufactured under a stringent quality management system. Every batch undergoes comprehensive testing for critical parameters including color strength, shade, solubility, and reactive group content to ensure compliance with industry standards and customer specifications. Certificates of Analysis (COA) detailing purity, physical properties, and performance characteristics 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). This product is hygroscopic (moisture-sensitive); the original container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange powder
Color Strength	100 ± 3% (Standard)
Shade	Conforms to standard
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	5.5 - 7.5
Identification (IR)	Conforms to structure
Fastness Properties	Wash: 4-5; Light: 5-6 (Typical on cotton)

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