Description

n-Ethyl-n-[4-[[4-[Ethyl[(3-Sulfophenyl)Methyl]Amino]Phenyl]Phenylmethylene]-2,5-Cyclohexadien-1-Ylidene]-3-Sulfonatobenzenemethanaminium is a high-purity, sulfonated triarylmethane dye intermediate. This compound is valued for its strong chromophoric properties and water solubility, making it a critical precursor for the synthesis of specialized dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical industries for producing vivid colors with excellent fastness and application performance.

Application

• Dye and Pigment Synthesis: A key intermediate for manufacturing cationic triarylmethane dyes, particularly for paper, leather, and textile applications.
• Textile Coloration: Used in the production of dyes for dyeing and printing natural and synthetic fibers, offering bright shades.
• Ink Manufacturing: Serves as a precursor for colorants in various ink formulations, including those for packaging and security printing.
• Biological Staining: Potential use as an intermediate for developing histological or cytological stains in laboratory settings.
• Analytical Reagents: Can be utilized in the synthesis of colorimetric indicators and sensors for chemical analysis.
• Specialty Chemical Production: Acts as a building block for creating functional dyes used in lasers, optical data storage, or non-linear optics.

Basic Information

Item	Details
Product Name	n-Ethyl-n-[4-[[4-[Ethyl[(3-Sulfophenyl)Methyl]Amino]Phenyl]Phenylmethylene]-2,5-Cyclohexadien-1-Ylidene]-3-Sulfonatobenzenemethanaminium
CAS No.	6638-02-4
Molecular Formula	C37H37N2O6S2- • Counterion+
Molecular Weight	Contact for details
Synonyms	Basic Blue 7; Victoria Blue B; C.I. 42595; [4-[4-[Ethyl(3-sulfonatobenzyl)amino]phenyl](phenyl)methylene]-N-ethyl-3-sulfonatobenzeneaminium hydroxide inner salt; Ethyl[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-3-sulfobenzenemethanaminium; C.I. Basic Blue 7; Victoria Blue B base
EINECS	229-623-0

Quality Control

Our n-Ethyl-n-[4-[[4-[Ethyl[(3-Sulfophenyl)Methyl]Amino]Phenyl]Phenylmethylene]-2,5-Cyclohexadien-1-Ylidene]-3-Sulfonatobenzenemethanaminium is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and tests for residual solvents and heavy metals, to ensure it meets exacting industry specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent degradation and clumping.

Specification

Item	Specification
Appearance	Dark green to blue-black powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	Contact for details
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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