Description

C. I. Reactive Red 236 is a high-performance, bifunctional reactive dye belonging to the azo chemical class, identified by CAS NO 99441-48-2. It is engineered to deliver excellent color fastness and high fixation rates on cellulosic fibers, providing superior wash and light fastness properties. This dye is essential for textile manufacturers and dye houses seeking vibrant, durable red shades for cotton, viscose, and other natural fibers.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarns, knits, and woven fabrics in jet, overflow, and winch dyeing machines.
• Continuous Dyeing Processes: Used in pad-batch and pad-steam operations for efficient, large-scale fabric production.
• Viscose and Linen Dyeing: Effective for dyeing other cellulosic substrates to achieve bright red hues.
• Textile Printing: Suitable for printing applications where high color yield and sharp outlines are required.
• Blend Dyeing: Can be used in combination with other dyes for coloring cotton blends with polyester or nylon.

Basic Information

Product Name	C. I. Reactive Red 236
CAS No.	99441-48-2
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	Contact for details
Synonyms	Reactive Red 236; Reactive Red KE-3B; C.I. 18105; Levafix Red CA; Procion Red H-E3B; Remazol Red 3B; Dianix Red CC; Sumifix Red 3BF; Drimarene Red K-4BL; Novacron Red C-2B
EINECS	Contact for details

Quality Control

Our C. I. Reactive Red 236 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent strength, shade, and reactivity, meeting the high standards required for industrial textile applications. A comprehensive Certificate of Analysis (COA) detailing purity, dye content, and key physical parameters is provided with each shipment.

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). This product is hygroscopic (moisture-sensitive); ensure the original packaging is sealed after use to prevent moisture absorption, which can affect performance.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Dye Content	≥ 80%
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.