Description

C.I. Reactive Blue 209 is a high-performance, bifunctional reactive dye belonging to the vinyl sulfone and monochlorotriazine chemical class. This dye is engineered to deliver exceptional color fastness and brilliant blue shades on cellulosic fibers like cotton and viscose. It is a critical component for textile manufacturers and dye houses requiring reliable, wash-fast coloration for apparel, home textiles, and industrial fabrics. The product is supplied as a high-purity powder to ensure consistent batch-to-batch performance in demanding dyeing applications.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarns, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous Pad-Dyeing: Used in pad-batch and pad-steam processes for efficient, large-scale coloration of cellulosic fabrics.
• Textile Printing: Formulated into printing pastes for creating sharp, wash-resistant blue designs on cellulose-based textiles.
• Viscose and Lyocell Dyeing: Effective for dyeing regenerated cellulosic fibers, providing excellent penetration and levelness.
• Blend Fabric Dyeing: Can be used in combination with other dye classes for coloring cotton-polyester or cotton-wool blends.
• Industrial Textiles: Suitable for coloring fabrics used in technical applications where color fastness is paramount.

Basic Information

Product Name	C.I. Reactive Blue 209
CAS No.	110493-61-3
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1135.28 g/mol (Disodium Salt Form)
Synonyms	Reactive Blue 209; Reactive Blue KE-GN; C.I. 61234; Remazol Brilliant Blue BB; Levafix Blue CA; Procion Blue H-EGN; Drimarene Blue K-2RL; Sumifix Brilliant Blue BF; Vinylsulfone/MCT Bifunctional Blue Dye; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[2-(sulfooxy)ethyl]sulfonyl]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-methoxy-5-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our C.I. Reactive Blue 209 is manufactured under a stringent quality management system. Every batch is tested against rigorous internal specifications for critical parameters including color strength, shade, solubility, and reactive group content to ensure optimal dyeing performance and reproducibility. A Certificate of Analysis (COA) detailing purity, physical properties, and application test results is provided with each shipment to support your quality assurance protocols.

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 heat. The container must be kept tightly sealed to protect the product from atmospheric moisture.

Specification

Item	Specification
Appearance	Blue to Navy Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Dusting Grade	Low Dusting

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