Description

Reactive Orange 4 is a highly reactive, water-soluble azo dye belonging to the fiber reactive dye class. It is engineered to form a covalent bond with cellulosic fibers like cotton and viscose, delivering excellent wash and light fastness properties. This dye is essential for textile manufacturers and dye houses seeking vibrant, durable orange to red-orange shades on natural fabrics. Its reliable performance makes it a key component in the production of dyed yarns, fabrics, and garments.

Application

• Exhaust Dyeing of Cellulosic Fibers: Primary application for dyeing cotton, rayon, linen, and other plant-based textiles in batch processes.
• Continuous Dyeing and Printing: Used in pad-batch, pad-steam, and printing processes for uniform coloration and sharp prints.
• Yarn Dyeing: Imparts consistent and deep shades to cotton and viscose yarns for weaving and knitting.
• Garment Dyeing: Suitable for dyeing finished cotton garments to achieve specific color requirements.
• Home Textiles: Coloring of towels, bed linens, and upholstery fabrics where colorfastness is critical.
• Technical Textiles: Used in applications where a specific color identification is needed alongside durability.

Basic Information

Product Name	Reactive Orange 4
CAS No.	12225-82-0
Molecular Formula	C26H17ClN7Na3O10S3
Molecular Weight	837.08 g/mol
Synonyms	Reactive Orange 4; Reactive Brilliant Orange X-GN; C.I. Reactive Orange 4; Reactive Orange X-GN; 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; Triactive Orange X-GN; Levafix Orange E-3GA; Procion Orange MX-2R
EINECS	Contact for details

Quality Control

Our Reactive Orange 4 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent strength, shade, and reactivity, meeting the high standards required for industrial textile dyeing. A comprehensive Certificate of Analysis (COA) detailing purity, dye content, solubility, and fastness properties is provided with each shipment to guarantee reliable performance in your process.

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 incompatible materials. The product is hygroscopic (moisture-sensitive); ensure the original packaging is sealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Orange to Red-Orange Powder
Identification (IR)	Conforms
Dye Content	≥ 80%
Strength (Color Value)	100 ± 3%
Shade	Standard
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
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.