Description

Afridol Blue Tetrasodium Salt is a synthetic, water-soluble colorant belonging to the class of triarylmethane dyes. This compound is valued for its intense and stable blue hue, making it a critical component in formulations requiring vivid and consistent coloration. It is primarily utilized by manufacturers in the textile, paper, and specialty ink industries for dyeing and printing applications.

Application

• Textile Dyeing: Used for coloring cotton, wool, silk, and synthetic fibers, offering good wash and light fastness.
• Paper Coloring: Employed in the production of colored papers, including decorative and packaging materials.
• Ink Manufacturing: A key pigment for writing inks, stamp pad inks, and other specialty printing inks.
• Biological Staining: Utilized in microscopy as a histological stain for cellular and tissue analysis in laboratory settings.
• Leather Processing: Applied in the dyeing of leather goods to achieve uniform and vibrant blue shades.
• Industrial Marker Fluids: Incorporated into non-permanent marker fluids for coding and identification.

Basic Information

Product Name	Afridol Blue Tetrasodium Salt
CAS No.	47897-65-4
Molecular Formula	C37H27N3Na4O9S3
Molecular Weight	867.8 g/mol
Synonyms	Acid Blue 90; C.I. 42655; Aniline Blue, Water Soluble; Bleu Aniline Hydro Soluble; Spirit Soluble Aniline Blue; Water Blue; Tetrasodium 4-[(4-anilinophenyl)[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium-3-sulfonato-8-hydroxy-1,6-disulfonatonaphthalene; Afridol Blue TS
EINECS	Contact for details

Quality Control

Our Afridol Blue Tetrasodium Salt is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, purity, and solubility. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment to guarantee consistency and traceability for your manufacturing processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to blue-black powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Completely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm

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