Description

C.I. Reactive Blue 8 is a synthetic reactive dye belonging to the anthraquinone class, known for its bright blue color and covalent bonding properties with cellulosic fibers. Its primary value lies in providing excellent wash and light fastness, ensuring vibrant and durable coloration in demanding textile applications. This product is essential for manufacturers in the textile industry, particularly for dyeing and printing cotton, viscose, and other natural fibers, as well as for research and development in color chemistry.

Application

• Exhaust dyeing of cotton and viscose yarns and fabrics.
• Continuous dyeing and pad-batch processes for cellulosic textiles.
• Textile printing applications for creating sharp, defined blue patterns.
• Coloration of paper and specialty cellulosic non-wovens.
• As a colorant in research laboratories for dye synthesis studies.
• Potential use in the preparation of colored polymers or functional materials.

Basic Information

Product Name	C.I. Reactive Blue 8
CAS No.	12217-98-0
Molecular Formula	C23H14ClN7O11S3·2Na
Molecular Weight	773.99 g/mol (Disodium salt)
Synonyms	Reactive Blue 8; Reactive Blue 8 (C.I.); C.I. 61205; Reactive Blue 8 Disodium Salt; Remazol Brilliant Blue R; Levafix Brilliant Blue E-BRA; Procion Blue H-ERD; Drimarene Brilliant Blue R-BL; Anthraquinone blue reactive dye; 1-Amino-4-[3-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-sulfophenylamino]anthraquinone-2-sulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our C.I. Reactive Blue 8 is manufactured under a stringent quality management system. Every batch undergoes comprehensive analysis to ensure consistent shade, strength, and reactivity. Key parameters including color strength, solubility, and fixation rate are verified against established standards. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee product integrity and traceability.

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 resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Dark blue powder
Identification (IR)	Conforms to standard
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70% (on cotton)
Dusting Property	Low dusting

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