Description

C.I. Reactive Blue 161 is a high-performance, water-soluble reactive dye belonging to the anthraquinone class, widely recognized for its brilliant blue hue and excellent fastness properties. Its primary value lies in its ability to form a covalent bond with cellulosic fibers, ensuring exceptional wash and light fastness for durable coloration. This dye is essential for textile manufacturers and dye houses specializing in cotton, viscose, and other natural fiber dyeing and printing processes.

Application

• Exhaust dyeing and continuous dyeing of cotton and other cellulosic fibers.
• Textile printing applications for producing sharp, vivid blue patterns on fabrics.
• Dyeing of viscose (rayon) and linen to achieve deep, uniform shades.
• Used in combination with other reactive dyes to produce a wide range of green, violet, and black shades.
• Potential application in the coloration of leather and paper, depending on formulation.

Basic Information

Product Name	C.I. Reactive Blue 161
CAS No.	71872-77-0
Molecular Formula	C29H19ClN7O11S3
Molecular Weight	781.16 g/mol
Synonyms	Reactive Blue 161; Reactive Blue M-2GE; C.I. 12236; Reactive Blue KE-GN; Remazol Brilliant Blue R Special; Levafix Blue E-RA; Procion Blue H-ERD; Drimarene Blue K-2RL
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Blue 161 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. Every lot is tested against key parameters including color strength, shade, solubility, and fixation properties. A comprehensive Certificate of Analysis (COA) detailing purity, 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	Dark Blue Powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Identification (IR)	Conforms to Standard
Fixation Rate	≥ 70%
Dusting Grade	Low Dusting

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