Description

C.I. Reactive Orange 67 is a high-performance, water-soluble reactive dye belonging to the azo chemical class, identified by CAS No. 51811-45-1. It is engineered to deliver vibrant and durable orange shades with excellent wash and light fastness properties on cellulosic fibers. This product is essential for textile manufacturers and dye houses seeking reliable, consistent coloration for cotton, viscose, and other natural fabrics.

Application

• Primary application in the exhaust dyeing of cotton yarn and fabrics.
• Used in the continuous dyeing and printing processes for cellulosic textiles.
• Suitable for dyeing blended fabrics containing cotton, such as cotton-polyester blends, using appropriate dyeing techniques.
• Employed in the coloration of viscose rayon and other regenerated cellulose fibers.
• Can be used for tinting and shading to achieve specific color depths and hues in textile production.
• Applied in industrial dyeing operations requiring dyes with good solubility and reproducibility.

Basic Information

Product Name	C.I. Reactive Orange 67
CAS No.	51811-45-1
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1180.36 g/mol
Synonyms	Reactive Orange 67; Reactive Brilliant Orange 3R; C.I. 17756; Reactive Orange H-ER; Triazinyl reactive dye Orange 67; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-4-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-methoxy-5-methyl-4-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-, sodium salt (1:4)
EINECS	Contact for details

Quality Control

Our C.I. Reactive Orange 67 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 batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) detailing purity and specifications are available upon request.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Orange to reddish-orange powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Shade	Within agreed tolerance vs. standard
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70% (on cotton)

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