Description

n-Methyl-n-[4-[[4-[n-Methyl-n-(3-Sodiosulfobenzyl)Amino]Phenyl](4-Sulfonatophenyl)Methylene]-2,5-Cyclohexadien-1-Ylidene]-3-Sodiosulfobenzenemethanaminium is a high-purity, water-soluble triarylmethane dye salt, also known as Acid Blue 9. This compound is valued for its intense and stable blue color, making it a critical component in applications requiring reliable and vivid coloration. It is primarily sought after by manufacturers in the textile, paper, and specialty ink industries for dyeing and staining processes.

Application

• Textile Dyeing: Used as a direct dye for coloring wool, silk, and nylon fibers, providing a bright blue hue with good wash-fastness.
• Paper Coloring: Employed in the production of colored papers, including specialty packaging and decorative papers.
• Biological Staining: Acts as a vital stain in microbiology and histology for cell structure visualization.
• Ink Formulation: A key pigment for manufacturing blue writing inks, stamp pad inks, and other liquid colorants.
• Leather Processing: Used in the dyeing of leather goods to achieve consistent and vibrant blue finishes.
• Detergent & Soap Coloring: Incorporated to provide a blue color to household and industrial cleaning products.
• Food Contact Material Coloring: Used for coloring packaging materials where direct food contact is not involved.
• Research & Development: Serves as a chemical intermediate and reference standard in analytical and synthetic chemistry laboratories.

Basic Information

Product Name	n-Methyl-n-[4-[[4-[n-Methyl-n-(3-Sodiosulfobenzyl)Amino]Phenyl](4-Sulfonatophenyl)Methylene]-2,5-Cyclohexadien-1-Ylidene]-3-Sodiosulfobenzenemethanaminium
CAS No.	6362-37-4
Molecular Formula	C37H35N3Na2O9S3
Molecular Weight	831.85 g/mol
Synonyms	Acid Blue 9; C.I. 42090; Erioglaucine A; FD&C Blue No. 1; Food Blue 2; Brilliant Blue FCF; Alphanine Blue FG; Patent Blue AE; Aniline Blue, water soluble; Triphenylmethane Blue
EINECS	228-783-6

Quality Control

Our n-Methyl-n-[4-[[4-[n-Methyl-n-(3-Sodiosulfobenzyl)Amino]Phenyl](4-Sulfonatophenyl)Methylene]-2,5-Cyclohexadien-1-Ylidene]-3-Sodiosulfobenzenemethanaminium is produced under a strict quality management system. Each batch is tested to ensure it meets specifications for identity, purity, and color strength, referencing standards such as the Food Chemicals Codex (FCC) for applicable grades and ISO 9001 for process control. Certificates of Analysis (COA) detailing all test results are available upon request 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 a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to moisture or direct light may affect color stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Blue to blue-green powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 85.0% (as Color Content)
Loss on Drying	≤ 15.0 %
Water Insoluble Matter	≤ 0.3 %
Subsidiary Colors	Conforms to standard
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm

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