Description

Reactive Blue 20 is a high-purity, anthraquinone-based reactive dye used for covalent bonding to cellulosic fibers. This compound is valued for its excellent wash and light fastness properties, providing a brilliant and durable blue coloration. It is primarily needed by manufacturers in the textile industry for dyeing and printing cotton, viscose, and other natural fibers, as well as for research and development in specialty chemical applications. Our supply of CAS NO 12225-40-0 ensures consistent quality and reliable performance for industrial-scale operations.

Application

• Primary application in the exhaust dyeing of cotton and other cellulosic textiles.
• Used in continuous pad-batch and pad-steam dyeing processes for uniform coloration.
• Employed in the printing of fabrics to create sharp, defined patterns.
• Suitable for dyeing viscose, linen, and hemp fibers.
• Can be used in laboratory settings for research and development of new dye formulations.
• Applied in the coloration of paper and leather in some specialized processes.

Basic Information

Product Name	Reactive Blue 20
CAS No.	12225-40-0
Molecular Formula	C29H20ClN7O11S3
Molecular Weight	774.16 g/mol
Synonyms	Reactive Blue 20; C.I. Reactive Blue 20; Remazol Brilliant Blue R; Levafix Brilliant Blue E-RA; Procion Blue H-ERD; Drimarene Brilliant Blue K-2RL; Anthraquinone Blue 20; 1-Amino-4-[3-((4-((2-chloro-4-sulfophenyl)amino)-6-((2-sulfooxyethyl)sulfonyl)-1,3,5-triazin-2-yl)amino)-4-sulfophenoxy]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid
EINECS	235-426-6

Quality Control

Our Reactive Blue 20 is manufactured under a strict quality management system. Every batch undergoes rigorous testing to ensure it meets high standards for purity, color strength, and reactive group content, which are critical for consistent dyeing performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee traceability and compliance.

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 moisture to maintain product stability and shelf life.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%

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