Description

C.I. Basic Blue 105 is a synthetic cationic dye belonging to the triarylmethane class, identified by CAS No. 37372-89-7. It is valued for its intense blue coloration and strong affinity for polyacrylonitrile and other cationic dyeable substrates. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking consistent, high-strength colorants for their processes.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers, modacrylics, and cationic dyeable polyester to achieve vibrant blue shades.
• Paper Coloring: Used in the production of colored papers, tissues, and specialty packaging where a strong blue hue is required.
• Ink Manufacturing: A key pigment for formulating inks used in flexographic, gravure, and specialty printing applications.
• Leather Finishing: Employed in the dyeing of leather goods to provide rich, uniform blue colors.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Suitable for mass coloration of certain plastics and polymers during manufacture.

Basic Information

Product Name	C.I. Basic Blue 105
CAS No.	37372-89-7
Molecular Formula	C₂₀H₂₆N₃O⁺ • Cl⁻
Molecular Weight	359.89 g/mol (cation)
Synonyms	Basic Blue 105; Astrazon Blue BG; Aizen Cathilon Blue BG; Maxilon Blue BG; C.I. 51045; 4-[(4-Dimethylaminophenyl)[4-(ethylamino)-1-naphthyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride; Victoria Pure Blue BO
EINECS	253-512-5

Quality Control

Our production of C.I. Basic Blue 105 adheres to stringent quality management protocols. Every batch is tested for critical parameters including color strength, shade, solubility, and impurity profile to ensure consistency and performance. Certificates of Analysis (COA) detailing purity, assay, and physical specifications are provided with each shipment to support your quality assurance requirements.

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 incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to prevent degradation.

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)
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Solubility (in water)	Clear, complete solution
pH (1% solution)	3.0 - 6.0

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