Description

Reactive Orange 5 is a high-performance, water-soluble reactive dye belonging to the azo dye class, specifically designed for covalent bonding with cellulosic fibers. Its primary value lies in delivering vibrant, wash-fast orange shades with excellent reproducibility and good all-around fastness properties. This product is essential for textile manufacturers and dye houses specializing in the coloration of cotton, viscose, and other natural fibers, where consistent color yield and durability are critical.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarns, knits, and woven fabrics in batch processes.
• Continuous Dyeing (Pad-Batch/Pad-Steam): Used in high-volume production for uniform coloration of cotton fabrics.
• Viscose/Rayon Coloration: Effective for dyeing regenerated cellulose fibers to achieve bright orange hues.
• Textile Printing: Suitable for printing pastes to create sharp, durable orange patterns on cellulosic substrates.
• Blend Dyeing (Cotton/Polyester): Can be used in combination with disperse dyes for polyester/cellulose blends.
• Leather Dyeing: Applied for coloring leather goods where a reactive bond with protein/cellulose components is beneficial.

Basic Information

Product Name	Reactive Orange 5
CAS No.	12237-97-7
Molecular Formula	C26H17ClN7Na3O11S3
Molecular Weight	837.08 g/mol
Synonyms	Reactive Orange 5; Reactive Brilliant Orange X-GN; C.I. Reactive Orange 5; 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; Triazinyl reactive orange dye; Azo reactive dye for cellulose
EINECS	Contact for details

Quality Control

Our Reactive Orange 5 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, fixation rate, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application test results 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 and excessive heat. Under recommended conditions, the product has a shelf life of 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 7.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Dusting Property	Low
Identification (IR)	Conforms to standard
Fixation Rate (on Cotton)	≥ 70%

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