Description

Reactive Blue 231 is a high-performance, fiber-reactive dye belonging to the phthalocyanine class, known for its brilliant blue hue and excellent fastness properties. It is a critical component for achieving durable and vibrant coloration in cellulosic fibers, offering superior wash and light fastness. This product is essential for textile manufacturers, dye houses, and chemical suppliers serving the global apparel, home furnishing, and technical textiles industries. Its consistent quality ensures reliable batch-to-batch performance in demanding dyeing processes.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, linen, and other cellulosic fibers.
• Exhaust Dyeing: Suitable for batch dyeing processes in jiggers, winches, and jet dyeing machines.
• Continuous Dyeing: Used in pad-batch and pad-steam continuous dyeing ranges for high-volume production.
• Printing Pastes: Formulated into printing pastes for textile printing applications.
• Leather Coloring: Employed in the dyeing of leather goods where reactive properties are beneficial.
• Paper Coloring: Used in specialty paper production requiring high color strength and stability.

Basic Information

Product Name	Reactive Blue 231
CAS No.	115682-09-2
Molecular Formula	C32H14Cl2CuN14O14S4·xNa
Molecular Weight	Contact for details
Synonyms	Reactive Blue 231; C.I. Reactive Blue 231; Phthalocyanine Blue 231; Remazol Brilliant Blue R Special; Levafix Blue CA; Drimarene Blue K-2RL; Sumifix Supra Brilliant Blue BRF; Kayacion Blue E-2RL
EINECS	Contact for details

Quality Control

Our Reactive Blue 231 is manufactured under a stringent quality management system to ensure consistent purity, color strength, and application performance. Every batch is tested against key parameters including shade, reactivity, solubility, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee compliance with your technical 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 heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Blue Powder
Color Strength	Standard Depth ± 3%
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	5.5 - 7.5
Identification (IR)	Conforms
Assay (HPLC)	≥ 90.0%

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