Description

C.I. Direct Red 226 is a high-performance, water-soluble azo dye belonging to the direct dye class, valued for its strong affinity to cellulosic fibers. Its primary commercial value lies in providing a bright, vivid red shade with excellent wash and light fastness properties on cotton, viscose, and other natural fibers. This dye is essential for textile manufacturers, paper colorants, and leather tanneries seeking reliable and cost-effective coloration solutions.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, rayon, viscose, and other cellulosic fabrics.
• Paper Coloring: Used in the production of colored papers, tissues, and paperboard where a strong red hue is required.
• Leather Finishing: Imparts color to leather goods in the tanning industry.
• Ink Formulation: A component in the manufacture of certain types of inks, including stamp pad and flexographic inks.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Wood Staining: Applied for coloring wood and wood-based products.

Basic Information

Product Name	C.I. Direct Red 226
CAS No.	12222-50-3
Molecular Formula	C29H19N5Na2O8S2
Molecular Weight	675.60 g/mol
Synonyms	Direct Red 226; C.I. 29160; Direct Fast Scarlet 4BS; Direct Scarlet 4BS; Direct Red 4BS; Pontamine Scarlet 4BS; Atul Direct Scarlet 4BS; Dinamine Scarlet 4BS
EINECS	Contact for details

Quality Control

Our production of C.I. Direct Red 226 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 fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with each 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 containers are sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Red to dark red powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Solubility in Water	Conforms
Shade	Conforms to standard
Fastness to Washing	≥ 3-4 (ISO 105-C03)
Fastness to Light	≥ 4 (ISO 105-B02)

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