Description

Reactive Orange 74 CAS NO 77907-34-7 is a high-performance, water-soluble reactive dye belonging to the azo dye class, specifically engineered for covalent bonding with cellulosic fibers. This compound matters for its excellent color fastness, brilliant orange hue, and efficient fixation properties, ensuring vibrant and durable coloration. It is primarily needed by textile manufacturers and dye houses specializing in cotton, viscose, and other cellulose-based materials, where consistent quality and reliable batch-to-batch performance are critical.

Application

• Exhaust Dyeing of Cotton: For uniform and deep shades in batch dyeing processes.
• Continuous Dyeing of Cellulosic Fabrics: Used in pad-batch and pad-steam applications for high-volume production.
• Yarn Dyeing: Provides excellent penetration and levelness for dyed yarns used in weaving and knitting.
• Printing Pastes: Formulated into printing inks for textile printing applications.
• Dyeing of Viscose and Rayon: Achieves bright and wash-fast colors on regenerated cellulose fibers.
• Blend Dyeing: Can be used in processes for cotton-polyester blends under appropriate conditions.

Basic Information

Product Name	Reactive Orange 74
CAS No.	77907-34-7
Molecular Formula	C26H17ClN7Na3O11S3
Molecular Weight	837.08 g/mol
Synonyms	Reactive Orange 74; C.I. Reactive Orange 74; Reactive Brilliant Orange 3R; Reactive Orange H-ER; Triazinyl reactive dye, Orange 74; 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; Reactive Orange M-3R
EINECS	Contact for details

Quality Control

Our production of Reactive Orange 74 adheres to stringent quality protocols to ensure consistent shade, strength, and solubility. Every batch is tested against key parameters including color value, fixation rate, and impurity profile. Certificates of Analysis (COA) documenting purity, physical properties, and performance characteristics are available upon request to support your quality assurance and production planning.

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 incompatible materials and moisture to maintain product integrity and performance.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%
Shade on Cotton	Conforms to standard

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