Description

C.I. Reactive Blue 85 is a high-performance, fiber-reactive anthraquinone dye renowned for its brilliant blue hue and excellent wash and light fastness properties. Its primary value lies in its ability to form strong covalent bonds with cellulose fibers, ensuring deep, permanent coloration with minimal environmental impact due to high fixation rates. This dye is essential for industrial-scale textile manufacturers and dye houses specializing in cotton, viscose, and other cellulosic materials, as well as for producers of leather and paper requiring vibrant, durable blue shades.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, rayon, linen, and other cellulosic fibers.
• Textile Printing: Used in printing pastes for creating sharp, wash-fast blue designs on cellulosic fabrics.
• Leather Coloring: Imparts a stable and vibrant blue color to finished leather goods.
• Paper Dyeing: Employed for coloring high-quality papers, including specialty and decorative papers.
• Biomolecule Staining: Used in specific laboratory and diagnostic applications for staining biological samples.
• Ink Formulation: A component in the manufacture of certain specialty inks requiring reactive dye properties.

Basic Information

Product Name	C.I. Reactive Blue 85
CAS No.	12731-67-8
Molecular Formula	C29H19ClN7O11S3·xNa
Molecular Weight	Approx. 840.18 (Free Acid)
EINECS	Contact for details
Synonyms	Reactive Blue 85; Reactive Blue H-EGN; C.I. 61205; Remazol Brilliant Blue R Special; Levafix Blue CA; Drimarene Blue K-2B; Anthraquinone Blue Dye, Reactive; 1-Amino-4-[3-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-sulfophenyl]amino-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt

Quality Control

Our production of C.I. Reactive Blue 85 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and reactive group content. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, physical properties, and application performance data to meet the specific requirements of the textile and dyeing industries.

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 incompatible materials. The product is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Dark Blue Powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 100 g/L (at 50°C)
pH (1% Solution)	5.5 - 7.5
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Fixation Rate	≥ 70% (on cotton)

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