Description

Victoria Blue 4R is a synthetic cationic dye belonging to the triarylmethane class, widely recognized for its intense blue color. This high-purity colorant is valued for its strong tinctorial strength and stability in various formulations, making it a critical component for achieving precise and durable coloration. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries, as well as in research and development for biological staining applications. Consistent quality and reliable supply are paramount for industrial users integrating this dye into their production processes.

Application

• Textile Dyeing: Used for dyeing silk, wool, and acrylic fibers to produce vibrant blue shades.
• Ink Manufacturing: Serves as a key pigment in the production of writing inks, stamp pad inks, and specialty printing inks.
• Biological Staining: Employed in microscopy as a histological stain for tissues and cells in laboratory settings.
• Paper Coloring: Applied in the tinting and surface coloring of specialty papers and cardboard.
• Leather Finishing: Used for dyeing leather goods to achieve consistent and deep blue finishes.
• Coatings and Paints: Incorporated into formulations for wood stains, lacquers, and other industrial coatings requiring a stable blue colorant.

Basic Information

Product Name	Victoria Blue 4R
CAS No.	2185-87-7
Molecular Formula	C29H32ClN3
Molecular Weight	458.03 g/mol
Synonyms	Basic Blue 11; C.I. 44040; Victoria Blue R; Victoria Blue 4R Base; Victoria Pure Blue BO; [4-[[4-(Dimethylamino)phenyl][4-(phenylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium chloride; Solvent Blue 5; Aizen Victoria Pure Blue BO
EINECS	218-562-1

Quality Control

Our Victoria Blue 4R is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high performance. Each lot is tested against rigorous internal specifications, which typically include parameters for identity, purity, color strength, and solubility. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark green to blue powder or crystals
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Loss on Drying	≤ 2.0%
Solubility (in Ethanol)	Clear, blue solution
Heavy Metals (as Pb)	≤ 20 ppm

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