Description

Reactive Blue 217 is a high-performance, vinyl sulfone-based reactive dye designed for the coloration of cellulosic fibers. Its primary value lies in its excellent wash and light fastness properties, providing durable and vibrant blue shades for demanding textile applications. This product is essential for textile manufacturers, particularly those specializing in cotton, viscose, and other cellulose-based fabrics, who require reliable and consistent dyeing performance. The compound is identified by the CAS registry number 131257-19-7.

Application

Reactive Blue 217 is a versatile dye used across various textile dyeing and printing processes. Its key applications include:

• Exhaust Dyeing of Cotton: For batch-wise dyeing processes to achieve deep and level blue shades.
• Continuous Dyeing (Pad-Batch, Pad-Steam): Ideal for high-volume, efficient coloration of woven and knitted fabrics.
• Textile Printing: Used in pigment printing formulations for sharp and clear blue designs on cellulose materials.
• Dyeing of Viscose/Rayon: Provides excellent affinity and color yield on regenerated cellulose fibers.
• Union Dyeing: Effective for dyeing blends of cotton with polyester or other synthetic fibers.
• Garment Dyeing: Suitable for dyeing finished apparel items for fashion and uniform markets.

Basic Information

Product Name	Reactive Blue 217
CAS No.	131257-19-7
Molecular Formula	C29H19ClN7O11S3·xNa
Molecular Weight	Contact for details
Synonyms	Reactive Blue 217; C.I. Reactive Blue 217; Remazol Brilliant Blue R Special; Vinylsulfone Reactive Blue 217; Levafix Blue CA; Drimarene Blue R-BL; Sumifix Brilliant Blue RBS; Reactive Blue CA
EINECS	Contact for details

Quality Control

Our Reactive Blue 217 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, 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 dyeing 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 heat. The product is hygroscopic (moisture-sensitive); ensure the original packaging is sealed after use to prevent moisture absorption which can affect performance.

Specification

Item	Specification
Appearance	Blue Powder
Color Strength	Standard Depth ± 3%
Shade	Conforms to Standard
Solubility (50°C)	> 100 g/L
Moisture Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	> 70%
Dusting Grade	Low Dusting

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