Description

Reactive Blue 5 is a synthetic anthraquinone-based reactive dye, widely recognized for its vibrant blue color and excellent fiber reactivity. Its primary value lies in its ability to form covalent bonds with cellulosic fibers like cotton and viscose, resulting in exceptional wash and light fastness properties. This dye is essential for textile manufacturers and dye houses specializing in the coloration of natural fibers, yarn, and fabric. The compound is commercially supplied as a high-purity powder, identified by CAS No. 16823-51-1, ensuring consistent performance in demanding industrial applications.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and other cellulosic fabrics.
• Yarn Dyeing: Used for coloring natural fiber yarns in hank, package, or beam dyeing processes.
• Printing Pastes: A key component in the formulation of printing inks and pastes for textile printing.
• Leather Coloring: Employed in the dyeing of leather goods to achieve deep, stable blue shades.
• Paper Staining: Used for specialty paper coloring where high color fastness is required.
• Research & Development: Serves as a standard or intermediate in chemical research and dye synthesis studies.

Basic Information

Item	Detail
Product Name	Reactive Blue 5
CAS No.	16823-51-1
Molecular Formula	C22H16ClN3Na2O11S3
Molecular Weight	681.00 g/mol
Synonyms	Reactive Blue 5; C.I. Reactive Blue 5; Remazol Brilliant Blue R; Levafix Brilliant Blue E-B; Procion Brilliant Blue H-5R; Anthraquinone blue reactive dye; 1-Amino-4-[3-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-sulfophenylamino]-9,10-dihydro-9,10-dioxoanthracene-2-sulfonic acid disodium salt
EINECS	240-850-3

Quality Control

Every batch of Reactive Blue 5 is manufactured under a strict quality management system. We ensure the product meets high standards for color strength, purity, and reactive group content through advanced analytical techniques like HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing assay, shade, solubility, and impurity profile is provided with each shipment to guarantee batch-to-batch consistency and performance reliability for your production.

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 stability and prevent caking.

Specification

Item	Specification
Appearance	Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Dusting Property	Low

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