Description

Reactive Red 1 is a synthetic, water-soluble azo dye belonging to the reactive dye class, widely recognized for its bright red color and excellent colorfastness properties. Its primary value lies in its ability to form a covalent bond with cellulosic fibers like cotton, ensuring superior wash and light fastness compared to direct dyes. This product is essential for industrial manufacturers in the textile dyeing and printing sectors, where consistent color quality and durability are critical for producing high-performance fabrics.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Textile Printing: Used in pigment printing pastes for creating vibrant red patterns and designs on fabrics.
• Leather Coloring: Imparts a stable red color to leather goods in the tanning industry.
• Paper Coloring: Employed in the production of specialty colored papers and paper products.
• Ink Formulation: A colorant component for certain types of inks requiring good solubility and color strength.
• Research & Development: Serves as a reference standard or intermediate in chemical synthesis and analytical laboratories.

Basic Information

Product Name	Reactive Red 1
CAS No.	17752-85-1
Molecular Formula	C26H17ClN7Na3O11S3
Molecular Weight	872.09 g/mol
Synonyms	Reactive Red 1; Reactive Brilliant Red X-3B; C.I. Reactive Red 1; Procion Red MX-5B; Levafix Red E-2B; Remazol Brilliant Red 5B; 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	241-743-5

Quality Control

Our Reactive Red 1 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, solubility, and fixation rate. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance protocols.

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 (moisture-sensitive); 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	≥ 98% (vs. Standard)
Assay (HPLC)	≥ 85%
Water Content	≤ 5.0%
Solubility in Water	Clear solution
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.