Description

C.I. Reactive Yellow 44 is a high-performance, water-soluble reactive dye belonging to the vinyl sulfone class, widely recognized for its bright and vivid yellow hue. Its primary value lies in its excellent fastness properties, including superior wash, light, and perspiration fastness, which are critical for durable coloration. This dye is essential for industrial textile manufacturers, particularly those specializing in the dyeing and printing of cellulosic fibers like cotton, viscose, and linen, where it forms a strong covalent bond with the fiber for long-lasting color.

Application

• Exhaust Dyeing of Cellulosic Fibers: Primary application for dyeing cotton, rayon, and linen yarns and fabrics in deep shades with excellent reproducibility.
• Continuous Dyeing Processes: Used in pad-batch and pad-steam operations for efficient, large-scale production of colored textiles.
• Textile Printing: Formulated into printing pastes for creating sharp, well-defined patterns on fabric with high color yield.
• Leather Coloring: Employed in the dyeing of leather goods where bright, fast colors are required.
• Paper Staining: Used for coloring specialty papers where high lightfastness is a key requirement.

Basic Information

Item	Detail
Product Name	C.I. Reactive Yellow 44
CAS No.	12270-91-6
Molecular Formula	C25H20ClN7O10S3·2Na
Molecular Weight	872.15 g/mol
Synonyms	Reactive Yellow 44; Reactive Brilliant Yellow 3GL; Reactive Yellow 3GL; Reactive Yellow KE-4G; C.I. 18205; Levafix Brilliant Yellow E-3GL; Remazol Brilliant Yellow 3GL; Drimarene Brilliant Yellow K-3GL; Procion Yellow H-EXL; Vinylsulfone Reactive Dye Yellow 44
EINECS	Contact for details

Quality Control

Every batch of C.I. Reactive Yellow 44 is manufactured and tested under a strict quality management system. We ensure consistent shade, strength, and solubility to meet the precise demands of industrial dyeing processes. Key parameters such as color strength, fixation rate, and impurity profile are rigorously controlled. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee batch-to-batch consistency and compliance with industry standards.

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 and incompatible materials. The product is hygroscopic (moisture-sensitive); ensure the original packaging is resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Yellow to orange powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.2%
Dye Content	≥ 70%
Solubility (50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%
Fastness Properties (Cotton)	Wash: 4-5; Light: 5-6; Perspiration: 4-5

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