Description

C.I. Basic Blue 55 is a synthetic cationic dye belonging to the triarylmethane chemical class. This high-purity colorant is valued for its intense blue hue and strong affinity for polyacrylonitrile and other cationic dyeable substrates. It is a critical component for manufacturers in the textile, paper, and specialty ink industries seeking consistent, vibrant coloration. Our supply ensures reliable performance and batch-to-batch uniformity for demanding industrial applications.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers, modacrylics, and other synthetic materials requiring cationic dyes.
• Paper Coloring: Used in the production of colored papers, tissues, and specialty paper products.
• Ink Manufacturing: A key pigment for creating blue shades in inks for flexographic, gravure, and other printing processes.
• Leather Finishing: Employed in the dyeing of leather goods to achieve deep, uniform blue colors.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Specialty Coatings: Incorporated into coatings where a stable, vivid blue color is required.

Basic Information

Product Name	C.I. Basic Blue 55
CAS No.	12262-18-9
Molecular Formula	C₂₀H₂₆N₃O₃S⁺·Cl⁻
Molecular Weight	415.95 g/mol
Synonyms	Basic Blue 55; Astrazon Blue BG; Aizen Cathilon Blue BG; Maxilon Blue BG; C.I. 11055; 4-[(4-Dimethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride; Victoria Pure Blue BO
EINECS	235-531-1

Quality Control

Our C.I. Basic Blue 55 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, shade, solubility, and impurity profiles. We provide a Certificate of Analysis (COA) with each shipment, detailing key parameters such as assay, hue, and fastness properties. Our quality commitment supports compliance with global standards for industrial colorants.

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)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%

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