Description

C.I. Basic Blue 75 is a synthetic cationic dye belonging to the triarylmethane chemical class. This product is valued for its intense and vibrant blue coloration, excellent substantivity to polyacrylonitrile fibers, and good lightfastness properties. It is primarily used in the textile industry for dyeing acrylic and modacrylic fibers, as well as in the coloration of paper and the manufacture of inks and toners. Our supply ensures consistent quality and reliable performance for industrial-scale applications.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and certain cationic-dyeable polyester fibers to achieve bright blue shades.
• Paper Coloration: Used in the production of colored papers, specialty packaging, and decorative paper products.
• Ink & Toner Manufacturing: Serves as a colorant in the formulation of printing inks, including for security printing, and in toner compositions for office equipment.
• Leather Finishing: Applied in the dyeing of leather goods to provide uniform and durable color.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Specialty Coatings: Incorporated into coatings where a specific blue hue is required for aesthetic or functional purposes.

Basic Information

Product Name	C.I. Basic Blue 75
CAS No.	12221-43-1
Molecular Formula	C₂₀H₂₆N₃O⁺ • Cl⁻
Molecular Weight	359.89 g/mol (for cation)
Synonyms	Basic Blue 75; Aizen Cathilon Blue GLH; Astrazon Blue GL; Maxilon Blue GL; Cationic Blue GL; C.I. 52025; 4-[(4-Dimethylamino)phenyl][4-(ethylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride; Victoria Pure Blue BO
EINECS	235-390-8

Quality Control

Every batch of C.I. Basic Blue 75 is manufactured and tested under a strict quality management system. We ensure the product meets high-purity standards suitable for industrial dyeing applications, with key parameters including color strength, shade, and solubility rigorously controlled. A Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to guarantee batch-to-batch consistency and performance reliability.

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 light-sensitive (store away from light).

Specification

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

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