Description

C.I. Basic Red 111 is a synthetic cationic dye belonging to the triarylmethane class, identified by CAS NO 113741-92-7. It is valued for its intense, bright red hue and strong affinity for polyacrylonitrile and other modified acrylic fibers. This dye is essential for manufacturers in the textile and specialty paper industries seeking vibrant, wash-fast coloration. Its properties also make it suitable for applications in biological staining and as a colorant for various substrates.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and cationic-dyeable polyester fibers to achieve brilliant red shades.
• Paper Coloring: Used in the production of specialty papers, including colored tissue, decorative paper, and security paper.
• Biological Staining: Employed as a histological stain in microscopy for visualizing cellular structures in laboratory settings.
• Ink Manufacturing: Serves as a colorant component in the formulation of inks for pens, markers, and other writing instruments.
• Leather Finishing: Applied in the dyeing of leather goods to provide consistent and durable color.
• Plastics and Polymers: Used to color a variety of plastic materials where compatibility with the substrate is confirmed.

Basic Information

Product Name	C.I. Basic Red 111
CAS No.	113741-92-7
Molecular Formula	C25H30ClN3
Molecular Weight	407.98 g/mol
Synonyms	Basic Red 111; Astrazon Red FBL; Aizen Cathilon Red FBLH; Maxilon Red FBL; Cationic Red FBL; 4-[(4-Dimethylamino)phenyl][4-(phenylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride; 1-Naphthalenaminium, 4-[(4-(dimethylamino)phenyl][4-(phenylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethyl-, chloride
EINECS	Contact for details

Quality Control

Our C.I. Basic Red 111 is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets consistent performance standards for color strength and solubility. A Certificate of Analysis (COA) detailing specific test results is provided with each shipment to guarantee traceability and compliance with customer specifications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Dark red to reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 1.0%

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