Description

C.I. Reactive Red 55 is a high-purity, reactive azo dye designed for demanding textile coloration processes. Its primary value lies in its ability to form a strong covalent bond with cellulose fibers, resulting in exceptional wash and light fastness properties. This dye is essential for manufacturers in the textile industry seeking vibrant, durable red shades on cotton, viscose, and other cellulosic materials.

Application

• Exhaust Dyeing of Cellulosic Fibers: Primary application for dyeing cotton, rayon, linen, and hemp in batch processes.
• Continuous Dyeing (Pad-Batch/Steam): Used in high-throughput operations for fabrics and yarns, offering efficient fixation.
• Textile Printing: Formulated into printing pastes for creating sharp, colorfast patterns and designs on cellulosic fabrics.
• Leather Dyeing: Imparts durable red coloration to leather goods where reactive dye properties are beneficial.
• Paper Coloring: Employed for specialty paper products requiring high color stability.
• Research & Development: Serves as a reference standard and key intermediate in dye chemistry research and new formulation development.

Basic Information

Product Name	C.I. Reactive Red 55
CAS No.	12237-07-9
Molecular Formula	C25H14Cl2N6Na4O16S4
Molecular Weight	996.64 g/mol
Synonyms	Reactive Red 55; Reactive Brilliant Red K-2G; Reactive Brilliant Red K-2BP; C.I. 18221; Remazol Brilliant Red F3B; Levafix Brilliant Red E-4BA; Procion Red H-E3B; Drimarene Brilliant Red K-2B; 1,3,6-Naphthalenetrisulfonic acid, 8-[[4-chloro-6-[[2-(sulfooxy)ethyl]sulfonyl]-1,3,5-triazin-2-yl]amino]-5-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Red 55 adheres to stringent quality 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, impurity profiles, and physical specifications are available upon request 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 and incompatible materials. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Red powder
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	≥ 100 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Identification (IR)	Conforms

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