Description

n-Ethyl-n-[4-[[4-(Diethylamino)Phenyl](2,4-Dimethyl-5-Sulfonato-3-Sodiosulfophenyl)Methylene]-2,5-Cyclohexadien-1-Ylidene]Ethanaminium is a high-purity, sulfonated cationic dye intermediate known for its brilliant color properties and excellent water solubility. This compound is a critical building block for synthesizing specialized dyes and pigments, offering superior tinctorial strength and stability in demanding formulations. It is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, wash-fast colors.

Application

• Textile Dyeing: As a key intermediate for cationic dyes used on acrylic, modacrylic, and acid-modified polyester fibers.
• Inkjet Inks: For the formulation of high-performance, water-based digital printing inks requiring intense color and stability.
• Paper Coloring: In the production of specialty colored papers and coatings where brightness and bleed resistance are paramount.
• Biological Staining: As a precursor for histological and cytological stains used in laboratory diagnostics and research.
• Laser Dyes & Optical Applications: In the synthesis of dyes for tunable lasers and other photonic devices.
• Industrial Pigments: For manufacturing high-grade organic pigments used in plastics and paints.

Basic Information

Product Name	n-Ethyl-n-[4-[[4-(Diethylamino)Phenyl](2,4-Dimethyl-5-Sulfonato-3-Sodiosulfophenyl)Methylene]-2,5-Cyclohexadien-1-Ylidene]Ethanaminium
CAS No.	21973-92-2
Molecular Formula	C33H42N2O6S2Na
Molecular Weight	657.81 g/mol
Synonyms	Basic Blue 7; Victoria Pure Blue BO; C.I. 42595; Astra Blue; Ethyl Blue; Aizen Astra Pure Blue BH; [4-[[4-(Diethylamino)phenyl][2,4-dimethyl-5-(sulfonato)-3-(sodiosulfo)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]diethylammonium hydroxide inner salt sodium salt
EINECS	244-664-8

Quality Control

Our production of n-Ethyl-n-[4-[[4-(Diethylamino)Phenyl](2,4-Dimethyl-5-Sulfonato-3-Sodiosulfophenyl)Methylene]-2,5-Cyclohexadien-1-Ylidene]Ethanaminium adheres to stringent quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and tests for heavy metals and residual solvents to ensure it meets the high standards required for industrial and laboratory applications. Certificates of Analysis (COA) are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); 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-black powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, blue solution

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