Description

Basic Red 46 CAS NO 12221-69-1 is a synthetic cationic dye belonging to the azo class, valued for its strong affinity to polyacrylonitrile fibers and other substrates with anionic character. This compound is engineered to deliver consistent, vibrant red coloration with excellent fastness properties, making it a critical component for manufacturers requiring reliable and high-performance dyeing. It is primarily utilized by the textile industry for dyeing acrylic fibers, as well as in the coloration of paper, leather, and specialty inks.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers, modacrylics, and other synthetic textiles to achieve bright red shades with good wash and light fastness.
• Paper Coloration: Used in the production of colored papers, including specialty packaging, decorative papers, and security documents.
• Leather Finishing: Employed in the dyeing of leather goods to provide rich, uniform red colors.
• Ink Manufacturing: A colorant for inks used in stamp pads, flexographic printing, and other specialty writing fluids.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: For mass coloration of certain plastics and polymers during manufacture.

Basic Information

Product Name	Basic Red 46
CAS No.	12221-69-1
Molecular Formula	C20H19N6O3S2·Na
Molecular Weight	494.52 g/mol
Synonyms	Basic Red 46; C.I. 110825; Astrazon Red FBL; Aizen Cathilon Red FBLH; Maxilon Red FBL; Sumiacryl Red FBL; Cationic Red 46; 2-[[4-[(2-Cyanoethyl)methylamino]phenyl]azo]-1,3-dimethyl-1H-imidazol-3-ium Methyl Sulfate; 1H-Imidazolium, 2-[[4-[(2-cyanoethyl)methylamino]phenyl]azo]-1,3-dimethyl-, methyl sulfate
EINECS	Contact for details

Quality Control

Our Basic Red 46 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous internal specifications for color strength, shade, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing purity, physical properties, and conformance is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark red powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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