Description

C.I. Reactive Blue 220 is a high-performance, vinyl sulfone-based reactive dye renowned for its brilliant blue hue and excellent colorfastness properties. This product is engineered for demanding textile applications where consistent shade, high fixation yield, and reliable wash-fastness are critical for quality and cost-efficiency. It is an essential component for dye houses and textile manufacturers specializing in the coloration of cellulosic fibers like cotton and viscose, as well as their blends.

Application

• Exhaust dyeing of cotton yarn and knitted fabrics.
• Continuous pad-batch and pad-steam dyeing of woven cellulosic fabrics.
• Dyeing of viscose (rayon) and other regenerated cellulose fibers.
• Coloration of cotton/polyester blends using suitable dyeing processes.
• Used in the formulation of liquid dye preparations for automated dosing systems.
• Ideal for applications requiring high wet fastness, such as apparel and home textiles.

Basic Information

Product Name	C.I. Reactive Blue 220
CAS No.	128416-19-3
Molecular Formula	C29H19ClN7O11S3·Na2
Molecular Weight	882.09 g/mol (Disodium salt)
Synonyms	Reactive Blue 220; Reactive Blue KN-R; C.I. 612022; Remazol Brilliant Blue R; Levafix Brilliant Blue E-RA; Drimarene Brilliant Blue R-K2L; Vinylsulfone Reactive Blue; Sodium 4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-[(E)-2-[4-[(E)-2-(sulfonatooxy)ethenylsulfonyl]phenyl]ethenyl]benzene-1-sulfonate
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Blue 220 adheres to stringent quality management protocols to ensure batch-to-batch consistency in strength, shade, and solubility. Every lot is tested against key parameters including color strength, hue, fixation rate, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee it meets your specific application 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Blue powder
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 7.0%
Water Insoluble Matter	≤ 0.2%
pH (1% Solution)	5.5 - 7.5
Identification (IR)	Conforms to standard
Shade	Conforms to standard
Fixation Rate	≥ 70% (Standard conditions)

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