Description

Basic Blue 4 is a synthetic cationic dye belonging to the triarylmethane class, widely recognized for its vibrant blue color and strong affinity for various substrates. Its primary value lies in providing consistent, high-intensity coloration for industrial applications where color fastness and batch-to-batch uniformity are critical. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking reliable and efficient blue dyes for their production processes. Basic Blue 4 CAS NO 55840-82-9 is a key component for creating a range of blue hues in demanding applications.

Application

• Textile Dyeing: Primarily used for dyeing acrylic fibers, modacrylic, and certain polyesters, offering good lightfastness and washfastness.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty paper products where a bright blue shade is required.
• Ink Manufacturing: A key pigment for formulating writing inks, stamp pad inks, and other solvent-based or aqueous ink systems.
• Leather Finishing: Used in the dyeing of leather goods to achieve uniform and deep blue coloration.
• Biological Staining: Utilized in histology and microbiology as a staining agent for microscopic analysis.
• Wood Staining: Applied for coloring wood and wood-based materials to enhance aesthetic appeal.

Basic Information

Item	Details
Product Name	Basic Blue 4
CAS No.	55840-82-9
Molecular Formula	C₂₀H₂₆ClN₃O
Molecular Weight	359.89 g/mol
Synonyms	Victoria Blue B; C.I. 44045; Basic Blue K; Aniline Blue; Spirit Blue; Victoria Blue BO; Methyl Violet B; Basic Blue R (Note: Some synonyms may refer to closely related compounds or historical names)
EINECS	259-881-5

Quality Control

Our Basic Blue 4 is manufactured under a stringent quality management system to ensure it meets the high standards required for industrial applications. Every batch is tested for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with each shipment to guarantee traceability and performance consistency.

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 green to blue powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Solubility	Freely soluble in water and ethanol

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