Description

Reactive Red 83 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 red hue, and reliable performance in demanding dyeing processes. It is a critical component for manufacturers in the textile industry requiring durable and vibrant coloration on cellulosic materials like cotton and viscose.

Application

• Textile Dyeing (Primary Application): Exhaust and continuous dyeing of cotton, viscose, and other cellulosic fibers.
• Printing Pastes: Formulation of printing inks and pastes for textile printing applications.
• Leather Coloring: Dyeing of leather goods where reactive properties are beneficial.
• Paper Staining: Used for coloring paper products requiring good water fastness.
• Research & Development: Serves as a reference standard or intermediate in chemical synthesis and dye research.

Basic Information

Product Name	Reactive Red 83
CAS No.	70210-00-3
Molecular Formula	C31H19ClN7Na3O11S3
Molecular Weight	933.14 g/mol
Synonyms	Reactive Red HE-3B; C.I. Reactive Red 83; Reactive Red HE3B; Remazol Red HE-3B; Levafix Red E-3BA; Procion Red HE-3B; Red HE3B; 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 83 is produced under a strict quality management system. Every batch is tested to ensure consistent purity, color strength, and reactive group content. A comprehensive Certificate of Analysis (COA) detailing parameters such as assay, shade, solubility, and fixation rate is provided with each shipment to guarantee it meets your specific application requirements.

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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture which can affect performance.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0

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