Description

C.I. Reactive Orange 61 is a high-performance, water-soluble reactive dye belonging to the azo chemical class. It is engineered to deliver vibrant and durable orange hues with excellent wash and light fastness properties on cellulosic fibers like cotton and viscose. This product is essential for textile manufacturers and dye houses seeking reliable, consistent coloration for apparel, home textiles, and industrial fabrics. Its reactive nature ensures strong covalent bonds with the fiber, resulting in superior color retention.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and other cellulosic fibers.
• Garment Manufacturing: Used for dyeing finished knitwear, t-shirts, and denim to achieve specific orange shades.
• Home Furnishings: Coloration of towels, bedsheets, curtains, and upholstery fabrics.
• Industrial Textiles: Dyeing of canvas, webbing, and other technical fabrics requiring colorfastness.
• Yarn Dyeing: Application in package dyeing and hank dyeing processes for colored yarns.
• Printing Pastes: Formulation of printing inks and pastes for textile printing applications.

Basic Information

Product Name	C.I. Reactive Orange 61
CAS No.	61969-15-1
Molecular Formula	C26H17ClN7Na4O15S4
Molecular Weight	933.13 g/mol
Synonyms	Reactive Orange 61; Reactive Brilliant Orange 3R; C.I. 182681; Reactive Orange H-3R; Triazinyl reactive dye Orange 61; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Orange 61 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and fixation rate. Certificates of Analysis (COA) detailing purity, physical properties, and application test results 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 room temperature (15-25°C). Keep away from strong oxidizing agents. 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-Orange Powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%
Dusting Grade	Low Dusting

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