Description

Basic Blue 66 is a synthetic cationic dye belonging to the triarylmethane class, widely recognized for its intense blue coloration. This product is valued for its strong tinctorial strength and good solubility in water, making it a versatile and efficient colorant for demanding industrial applications. It is primarily utilized by manufacturers in the textile, paper, and specialty ink industries where consistent, vibrant blue hues are required.

Application

• Textile Dyeing and Printing: Used for coloring cotton, silk, wool, and nylon, providing bright blue shades with good wash fastness.
• Paper Coloring: Employed in the production of colored papers, tissues, and decorative paper products.
• Ink Manufacturing: A key pigment for formulating writing inks, stamp pad inks, and other specialty aqueous-based inks.
• Leather Finishing: Applied in dyeing leather goods to achieve uniform and attractive blue finishes.
• Biological Staining: Used in histology and microbiology as a staining agent for microscopic analysis.
• Dye Intermediates: Serves as a chemical intermediate for the synthesis of other complex dyes and pigments.

Basic Information

Product Name	Basic Blue 66
CAS No.	12221-38-4
Molecular Formula	C₂₀H₂₆ClN₃O
Molecular Weight	359.89 g/mol
Synonyms	Basic Blue 66; C.I. 42775; Victoria Pure Blue BO; Aizen Victoria Pure Blue BOH; Astra Blue B; Methyl Blue 2B; Brilliant Blue R; Basic Blue K; 4-[(4-Dimethylaminophenyl)[4-(ethylamino)-1-naphthyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride
EINECS	235-402-6

Quality Control

Our Basic Blue 66 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous in-house specifications, which typically include assay, shade strength, solubility, and impurity profile analysis. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical requirements.

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.

Specification

Item	Specification
Appearance	Dark blue to greenish-blue powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5% (vs. 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.