Description

Reactive Yellow 165 is a high-performance, water-soluble reactive dye belonging to the vinyl sulfone class, known for its bright and vibrant yellow hue. It is engineered for exceptional color yield, wash fastness, and fixation efficiency, making it a cost-effective solution for demanding dyeing applications. This product is essential for textile manufacturers, particularly those specializing in the dyeing and printing of cellulosic fibers like cotton, viscose, and linen.

Application

• Primary application in the exhaust dyeing of cotton and other cellulosic fibers.
• Used in continuous dyeing and pad-batch processes for uniform coloration.
• Ideal for the printing of textiles, offering sharp definition and brilliant shades.
• Suitable for dyeing viscose (rayon) and linen fabrics.
• Can be applied in combination with other reactive dyes to produce a wide color palette.
• Used in the production of home textiles and apparel requiring high colorfastness.

Basic Information

Product Name	Reactive Yellow 165
CAS No.	141255-35-8
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1131.28 g/mol
Synonyms	Reactive Yellow 165; C.I. Reactive Yellow 165; Reactive Brilliant Yellow 3GL; Reactive Golden Yellow 3GL; Reactive Yellow 3GL; Vinylsulfone Reactive Dye Yellow 165; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Every batch of Reactive Yellow 165 is manufactured and tested under a stringent quality management system. We ensure consistent shade, strength, and solubility to meet the precise requirements of industrial dyeing processes. A comprehensive Certificate of Analysis (COA) detailing purity, shade, and physical properties is provided with each shipment to guarantee traceability and performance.

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.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms
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)	6.0 - 8.0
Fixation Rate	≥ 70%

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