Description

C.I. Basic Blue 45 is a synthetic cationic dye belonging to the triarylmethane chemical class. This high-purity colorant is valued for its intense and brilliant blue hue, offering excellent tinctorial strength and good solubility in water and polar organic solvents. It serves as a critical component for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent coloration. The compound is identified by the CAS registry number 12217-42-4.

Application

This versatile basic dye is engineered for a range of industrial coloring applications where cationic properties are advantageous.

• Textile Dyeing: Primarily used for dyeing acrylic fibers, modacrylic, and certain polyesters, providing vibrant shades with good wash fastness.
• Paper Coloring: Employed in the surface coloring of specialty papers, including decorative and security papers.
• Ink Manufacturing: A key pigment for formulating stamp pad inks, flexographic inks, and other specialty writing fluids.
• Biological Staining: Used in histology and microbiology as a staining agent for microscopic analysis.
• Leather Finishing: Applied in the dyeing of leather goods to achieve deep, uniform blue colors.
• Plastics and Polymers: Suitable for coloring certain types of plastics where compatibility with the polymer matrix is confirmed.

Basic Information

Product Name	C.I. Basic Blue 45
CAS No.	12217-42-4
Molecular Formula	C20H26N3O3S+
Molecular Weight	380.50 g/mol
Synonyms	Basic Blue 45; Aizen Cathilon Blue GLH; Astrazon Blue GL; Maxilon Blue GL; Sevron Blue GL; C.I. 11052; 4-[(4-Dimethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium methyl sulfate; Basic Blue K
EINECS	235-386-4

Quality Control

Our production of C.I. Basic Blue 45 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed against established specifications for color strength, purity, and solubility. A comprehensive Certificate of Analysis (COA) detailing specific test results is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents. For long-term storage, maintain the original packaging to prevent contamination and moisture uptake.

Specification

Item	Specification
Appearance	Dark blue to greenish-blue powder
Identification (IR)	Conforms to standard
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Ash Content	≤ 1.0%
Particle Size	100% passes through 80 mesh

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