Description

Reactive Orange 64 is a high-performance, water-soluble reactive dye belonging to the azo dye class, identified by CAS NO 61901-80-2. It is engineered to form a covalent bond with cellulosic fibers, delivering excellent wash and light fastness properties for durable coloration. This product is essential for textile manufacturers and dye houses specializing in the dyeing and printing of cotton, viscose, and other natural fibers, where consistent shade and robust performance are critical.

Application

• Primary application in the exhaust dyeing of cotton and viscose yarns and fabrics.
• Used in continuous dyeing processes, such as pad-batch and pad-steam, for uniform coloration.
• Employed in the printing of textiles, offering bright and clear orange shades.
• Suitable for dyeing blended fabrics containing cellulosic components.
• Used in the production of dyed garments and home textiles requiring high colorfastness.
• Applicable in research and development for creating new color formulations and shades.

Basic Information

Product Name	Reactive Orange 64
CAS No.	61901-80-2
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1195.31 g/mol
Synonyms	Reactive Orange H-ER; C.I. Reactive Orange 64; Reactive Brilliant Orange H-ER; Reactive Orange HE-R; 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]-, sodium salt (1:4); Reactive Orange HE4R; Lanasol Orange R
EINECS	Contact for details

Quality Control

Our Reactive Orange 64 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent strength, shade, and reactive group content, meeting the high standards required for industrial textile applications. A comprehensive Certificate of Analysis (COA) detailing purity, solubility, and fastness properties is provided with each shipment to guarantee supply reliability and performance consistency.

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 moisture to maintain product integrity and shelf life.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%
Fastness Properties (Cotton)	Wash: 4-5, Light: 5-6

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