Description

N-Ethyl-N-[4-[[4-[N-ethyl-N-(2-sodiosulfoethyl)amino]-2,5-dimethylphenyl][4-(diethylamino)phenyl]methylene]-3-methyl-2,5-cyclohexadien-1-ylidene]-2-sulfonatoethanaminium is a high-purity, water-soluble cationic dye belonging to the triarylmethane class, known for its intense color and excellent substantivity. This compound is engineered to deliver exceptional color strength and stability, making it a critical component in formulations requiring vibrant, long-lasting hues. It is primarily sought after by manufacturers in the textile, paper, and specialty ink industries for dyeing and printing applications where quality and consistency are paramount.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, nylon, and acrylic fibers, offering good lightfastness and wash fastness.
• Paper Coloring: Used in the production of colored papers, including specialty packaging and decorative papers.
• Ink Manufacturing: A key pigment for formulating writing inks, stamp pad inks, and other liquid colorants.
• Biological Staining: Employed in histology and microbiology as a staining agent for microscopic analysis.
• Leather Finishing: Applied in the dyeing process for leather goods to achieve uniform and rich coloration.
• Indicator Chemistry: Can be utilized as a pH indicator or in chemical detection systems due to its chromogenic properties.

Basic Information

Product Name	N-Ethyl-N-[4-[[4-[N-ethyl-N-(2-sodiosulfoethyl)amino]-2,5-dimethylphenyl][4-(diethylamino)phenyl]methylene]-3-methyl-2,5-cyclohexadien-1-ylidene]-2-sulfonatoethanaminium
CAS No.	5844-07-5
Molecular Formula	C39H51N4NaO6S2
Molecular Weight	758.96 g/mol
Synonyms	Basic Blue 7; Victoria Blue B; C.I. 42595; Ethyl Victoria Blue B; Aniline Blue B; [4-[[4-(Diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium chloride (related hydrochloride form); Astra Blue B; Paper Blue B
EINECS	Contact for details

Quality Control

Our production of Basic Blue 7 adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot is tested against comprehensive specifications, including identity, purity, and color value. Certificates of Analysis (COA) documenting these results are provided to guarantee the material meets the requirements for industrial and technical-grade applications.

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

Specification

Item	Specification
Appearance	Dark green to blue powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 5% (vs. Standard)
Loss on Drying	Max. 5.0%
Water Solubility	Completely soluble
Ash Content (Sulfated)	Contact for details

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