Description

Basic Blue 77 is a synthetic cationic dye belonging to the triarylmethane class, widely recognized for its intense blue color and excellent affinity for polyacrylonitrile fibers. This high-performance colorant is valued for its brilliant shade, good lightfastness, and strong build-up properties in industrial dyeing processes. It is primarily utilized by manufacturers in the textile, paper, and specialty ink industries seeking consistent and vibrant coloration for synthetic materials.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and other synthetic fibers, offering excellent exhaustion and leveling.
• Paper Coloring: Used in the production of colored papers, tissues, and specialty paper products requiring a stable blue hue.
• Ink Manufacturing: A key component in the formulation of inks for ballpoint pens, stamp pads, and other writing instruments.
• Leather Finishing: Employed for dyeing leather goods to achieve uniform and deep blue shades.
• Biological Staining: Used in histology and microbiology as a staining agent for microscopic analysis.
• Plastics and Polymers: Suitable for mass coloration of certain plastics where color consistency is critical.

Basic Information

Product Name	Basic Blue 77
CAS No.	12270-15-4
Molecular Formula	C₂₀H₂₆N₃O₃S⁺·Cl⁻
Molecular Weight	415.95 g/mol
Synonyms	Basic Blue K; C.I. 42583; Astrazon Blue BG; Aizen Cathilon Blue BG; Maxilon Blue BG; Sevron Blue BG; Sumiacryl Blue N-BG; Cationic Blue BG; 4-[(4-Dimethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride
EINECS	235-543-6

Quality Control

Our Basic Blue 77 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise color strength, purity, and application performance specifications. A detailed Certificate of Analysis (COA) documenting key parameters such as assay, shade, solubility, and impurity profile is provided with each shipment to guarantee consistency and reliability for your production processes.

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; prolonged exposure to light should be avoided to prevent degradation of color strength.

Specification

Item	Specification
Appearance	Dark blue to greenish-blue powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Ash Content	Max. 1.0%
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.