Description

Reactive Orange 78 is a high-performance, water-soluble reactive dye designed for covalent bonding with cellulosic fibers. Its primary value lies in delivering brilliant and durable orange shades with excellent wash and light fastness properties. This product is essential for textile manufacturers and dye houses seeking reliable coloration for cotton, viscose, and other natural fabrics. Consistent batch-to-batch quality ensures reproducible results in demanding industrial dyeing processes.

Application

• Exhaust dyeing of cotton yarn and knitted fabrics.
• Continuous pad-dyeing and pad-steam processes for woven cotton.
• Coloration of viscose rayon and other regenerated cellulose fibers.
• Used in the production of home textiles like bed linens and towels.
• Application in garment dyeing for consistent, vibrant orange hues.
• Suitable for dyeing blends where the cellulosic component is targeted.

Basic Information

Product Name	Reactive Orange 78
CAS No.	71902-15-3
Molecular Formula	C29H19ClN7Na3O11S3
Molecular Weight	882.08 g/mol
Synonyms	Reactive Orange 78; C.I. Reactive Orange 78; Reactive Brilliant Orange 3R; Reactive Orange H-ER; Remazol Brilliant Orange 3R; Levafix Orange E-3R; Drimarene Orange K-3R; Sumifix Brilliant Orange 3R
EINECS	Contact for details

Quality Control

Our Reactive Orange 78 is manufactured under a strict quality management system. Every batch undergoes comprehensive testing for critical parameters including color strength, shade, solubility, and fixation rate to ensure it meets the high standards required for industrial textile applications. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment.

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 resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%
Dusting Grade	Low-dusting
Identification (IR)	Conforms to standard

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