Description

C.I. Reactive Brown 15 is a high-performance, bifunctional reactive dye belonging to the azo chemical class. It is engineered for exceptional color fastness and covalent bonding with cellulosic fibers, providing durable and vibrant brown shades. This product is essential for textile manufacturers and dye houses seeking reliable, high-quality coloration for cotton, viscose, and other natural fabrics.

Application

• Exhaust Dyeing of Cotton: Primary application for yarn, knits, and woven fabrics in garment manufacturing.
• Continuous Dyeing Processes: Used in pad-batch and pad-steam operations for efficient, large-scale fabric production.
• Viscose and Linen Coloration: Provides excellent penetration and leveling on other cellulosic substrates.
• Union Dyeing: Effective for dyeing blends of cotton with synthetic fibers under controlled conditions.
• Home Textiles: Used for dyeing towels, bed linens, and upholstery fabrics requiring wash and light fastness.
• Technical Textiles: Suitable for industrial fabrics where consistent color and durability are critical.

Basic Information

Product Name	C.I. Reactive Brown 15
CAS No.	12225-71-7
Molecular Formula	C31H19Cl2N9O13S3·3Na
Molecular Weight	958.61 g/mol (as trisodium salt)
Synonyms	Reactive Brown 15; Reactive Brown H-3R; C.I. 12225-71-7; Reactive Brown 3R; Levafix Brown E-3R; Procion Brown H-3R; Remazol Brown 3R; Dianix Brown S-3R
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Brown 15 adheres to stringent quality management systems, ensuring batch-to-batch consistency and performance reliability. Every lot is tested for critical parameters including shade, strength, solubility, and fixation properties. A Certificate of Analysis (COA) detailing purity, physical properties, and application test results is provided with each shipment to guarantee it meets your specific technical requirements.

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 moisture to maintain product stability and shelf life.

Specification

Item	Specification
Appearance	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
Dusting Property	Low
Identification (IR)	Conforms to standard
Fixation Rate	≥ 70%

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