Description

Procion Reactive Red 4 is a high-performance, water-soluble reactive dye belonging to the monochlorotriazine class. It is engineered to form a strong covalent bond with cellulosic fibers, delivering excellent wash and light fastness properties. This dye is essential for textile manufacturers and dye houses seeking vibrant, durable red shades on cotton, viscose, and other natural fibers.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and regenerated cellulose fibers (e.g., viscose, lyocell).
• Textile Printing: Used in printing pastes for creating sharp, colorfast red patterns on cellulosic fabrics.
• Leather Coloring: Imparts color to leather goods where reactive dyeing properties are beneficial.
• Paper Staining: Employed for coloring paper pulp to achieve specific red hues.
• Research & Development: Serves as a reference standard or intermediate in chemical synthesis and dye research laboratories.
• Educational Use: Utilized in academic settings for teaching dye chemistry and application techniques.

Basic Information

Product Name	Procion Reactive Red 4
CAS No.	16480-43-6
Molecular Formula	C26H17ClN7Na3O11S3
Molecular Weight	829.07 g/mol
Synonyms	Reactive Red 4; C.I. Reactive Red 4; Procion Red H-4B; Remazol Red RB; Levafix Red E-4BA; Drimarene Red K-4B; Reactive Brilliant Red X-3B; 1,3,5-Triazine-2,4,6-triamine, 1-(4-((4-amino-9,10-dihydro-9,10-dioxo-3-sulfo-1-anthracenyl)amino)-6-((4-sulfophenyl)amino)-1,3,5-triazin-2-yl)-3-methyl-, sodium salt (1:3)
EINECS	240-521-5

Quality Control

Every batch of Procion Reactive Red 4 is manufactured and tested under a strict quality management system. We ensure the product meets high standards for color strength, solubility, and reactive group content. A comprehensive Certificate of Analysis (COA) detailing purity, shade, and application performance is provided with each shipment to guarantee consistency and reliability for your production processes.

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 product stability and performance.

Specification

Item	Specification
Appearance	Red to dark red powder
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	6.0 - 8.0
Identification (IR)	Conforms to structure
Dye Content	≥ 80%
Fixation Rate (on Cotton)	≥ 70%

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