Description

C.I. Reactive Red 39 is a high-purity, reactive azo dye belonging to the vinyl sulfone class, known for its bright red hue and excellent wash-fastness properties. This compound is critical for achieving vibrant, durable coloration on cellulosic fibers like cotton and viscose, forming a strong covalent bond with the fabric. It is an essential material for textile manufacturers, dye houses, and industrial chemical suppliers serving the global apparel and home furnishing markets.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and other cellulosic fibers.
• Viscose Rayon Coloration: Used for dyeing viscose and modal fabrics, providing excellent color yield and brightness.
• Garment Manufacturing: Key for producing dyed yarns and finished fabrics for apparel, including knitwear and denim.
• Home Textiles: Applied in the dyeing of towels, bedsheets, and upholstery fabrics requiring high colorfastness.
• Industrial Fabric Production: Suitable for coloring canvas, webbing, and other technical textiles.
• Research & Development: Serves as a reference standard and intermediate in the development of new dye formulations and processes.

Basic Information

Product Name	C.I. Reactive Red 39
CAS No.	12226-16-3
Molecular Formula	C25H14Cl2N6Na4O16S4
Molecular Weight	995.64 g/mol
Synonyms	Reactive Red 39; Reactive Red VS-R; C.I. 18280; Remazol Red RB; Levafix Red E-4BA; Procion Red H-EXL; Vinylsulfone Reactive Red 39; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[2-[(2-sulfooxyethyl)sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-methoxy-5-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Red 39 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested for critical parameters including color strength, solubility, and reactive group content. Certificates of Analysis (COA) detailing purity, shade, and fastness properties are provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and moisture to maintain product stability and shelf life.

Specification

Item	Specification
Appearance	Red powder
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Identification (IR)	Conforms to structure
Fastness Properties	Wash Fastness: ≥ 4; Light Fastness: ≥ 5

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