Description

C.I. Reactive Red 56 is a high-performance, water-soluble azo dye belonging to the reactive dye class, specifically designed for covalent bonding with cellulosic fibers. Its primary value lies in providing brilliant, wash-fast red shades with excellent reproducibility in industrial dyeing processes. This product is essential for textile manufacturers and dye houses specializing in cotton, viscose, and other cellulose-based materials, where consistent color yield and fastness properties are critical.

Application

• Exhaust dyeing of cotton yarns and fabrics.
• Continuous pad-batch and pad-steam dyeing of cellulosic textiles.
• Dyeing of viscose rayon and other regenerated cellulose fibers.
• Used in combination with other reactive dyes to achieve a wide spectrum of shades.
• Application in the garment dyeing industry for finished apparel.
• Suitable for use in textile printing pastes (after appropriate formulation).

Basic Information

Product Name	C.I. Reactive Red 56
CAS No.	12237-08-0
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1151.06 g/mol
Synonyms	Reactive Red 56; Reactive Red K-2G; Reactive Red KE-3B; Reactive Red M-3BE; C.I. 18221; Remazol Red 3BS; Levafix Red E-3B; Procion Red H-3B; Drimarene Red K-2B; Sumifix Red 3BF
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Red 56 adheres to stringent quality management protocols to ensure batch-to-batch consistency in strength, shade, and reactivity. Key parameters such as color strength, solubility, and fixation rate are rigorously tested against established internal standards. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment to guarantee it meets your specific application 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 strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the original packaging is resealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
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.