Description

Reactive Yellow 111 is a high-performance, water-soluble reactive dye belonging to the azo dye class, widely recognized for its vibrant yellow hue and excellent fastness properties. Its primary value lies in its ability to form a covalent bond with cellulose fibers, resulting in brilliant, wash-fast, and light-fast coloration critical for demanding textile applications. This product is essential for manufacturers in the textile industry, particularly for dyeing and printing cotton, viscose, and other cellulosic fabrics where consistent color yield and durability are paramount.

Application

• Exhaust dyeing of cotton and regenerated cellulose fibers (e.g., viscose, lyocell).
• Continuous pad-batch and pad-steam dyeing processes for woven and knitted fabrics.
• Textile printing applications, offering sharp outlines and bright shades.
• Dyeing of cellulosic blends with synthetic fibers under appropriate conditions.
• Used in the production of home textiles, such as bed linens and curtains, requiring high lightfastness.
• Coloration of industrial textiles where color consistency and fastness are critical.

Basic Information

Product Name	Reactive Yellow 111
CAS No.	72510-00-0
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1131.36 g/mol
Synonyms	Reactive Yellow M-3R; C.I. Reactive Yellow 111; Reactive Brilliant Yellow M-3R; Yellow Reactive Dye 111; 4,4'-(1,3,5-Triazine-2,4,6-triyltriimino)bis[5-hydroxy-6-[(4-sulfophenyl)azo]naphthalene-2,7-disulfonic acid] tetrasodium salt; Reactive Yellow H-E4R (related class); Tetrasodium 4,4'-(1,3,5-triazine-2,4,6-triyltriimino)bis[5-hydroxy-6-[(4-sulfophenyl)azo]naphthalene-2,7-disulfonate]
EINECS	Contact for details

Quality Control

Our Reactive Yellow 111 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each production lot is tested against key parameters including color strength, shade, solubility, and fixation rate. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application performance is provided with every shipment to support your quality assurance protocols.

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. 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-brown powder
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 7.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Fixation Rate (on Cotton)	≥ 70%
Dusting Grade	Low dusting
Identification (IR)	Conforms to standard

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