Description

Reactive Red 66 is a high-purity, reactive azo dye specifically engineered for covalent bonding with textile fibers. This compound is valued for its excellent color fastness, bright hue, and efficient fixation properties, ensuring vibrant and durable coloration. It is primarily required by manufacturers in the textile industry for dyeing and printing applications on cellulosic fibers like cotton and viscose.

Application

• Primary application in the exhaust dyeing of cotton and other cellulosic fabrics.
• Used in continuous dyeing processes, including pad-batch and pad-steam methods.
• Employed in the printing of textiles to create patterned designs with sharp outlines.
• Suitable for dyeing viscose rayon and linen to achieve brilliant red shades.
• Can be applied in the coloration of paper pulp for specialty papers.
• Potential use in research and development for creating dye-polymer conjugates.

Basic Information

Product Name	Reactive Red 66
CAS No.	12226-33-4
Molecular Formula	C26H17ClN7Na3O11S3
Molecular Weight	880.09 g/mol
Synonyms	Reactive Red HE 3B; C.I. Reactive Red 66; Reactive Red HE-3B; Remazol Red HE 3B; Levafix Red E-3B; Procion Red HE-3B; Reactive Red M-3B; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, trisodium salt
EINECS	Contact for details

Quality Control

Our Reactive Red 66 is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including spectrophotometric purity analysis and strength assessment, to ensure consistent performance and compliance with industry standards. Certificates of Analysis (COA) detailing purity, shade, and fixation properties 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). Keep away from strong oxidizing agents. The product is hygroscopic; ensure the container is sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Color Strength	≥ 100% (vs. Standard)
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
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.