Description

Tetrasodium 2,2'-[[4,4'-Bis[[1-Hydroxy-6-[(4-Methoxyphenyl)Amino]-3-Sulphonato-2-Naphthyl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Diacetate is a high-purity, water-soluble anionic dye belonging to the class of disazo compounds. This compound is engineered to deliver exceptional color strength, lightfastness, and thermal stability in demanding industrial applications. It is primarily sought after by manufacturers in the textile, paper, and specialty ink sectors who require reliable and consistent colorants for their high-value products.

Application

• Textile Dyeing: A key colorant for dyeing natural and synthetic fibers, particularly where bright, wash-fast shades are required.
• Paper Coloring: Used in the production of colored papers, including specialty packaging and decorative papers, offering good runnability and hue.
• Ink Formulation: Employed in the manufacture of inks for flexographic, gravure, and inkjet printing, contributing to vivid color output.
• Leather Finishing: Applied in dyeing leather goods to achieve uniform and durable coloration.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific affinity.
• Industrial Marker & Tracer: Can be utilized as a color marker in various industrial fluids and processes.

Basic Information

Product Name	Tetrasodium 2,2'-[[4,4'-Bis[[1-Hydroxy-6-[(4-Methoxyphenyl)Amino]-3-Sulphonato-2-Naphthyl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Diacetate
CAS No.	6655-95-4
Molecular Formula	C64H44N8Na4O20S4
Molecular Weight	~1469.3 g/mol
Synonyms	Direct Blue 1; C.I. 24410; Pontamine Blue 4BX; Tetrasodium 4,4'-bis[(7-anilino-1-hydroxy-3-sulphonato-2-naphthyl)azo]biphenyl-3,3'-diylbis(oxy)diacetate; Amanil Sky Blue 4BX; Atlantic Blue 4BX; Benzo Blue 4BX; Diazol Blue 4BX
EINECS	Contact for details

Quality Control

Our production of this dye adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed against stringent in-house specifications, which typically include parameters for color strength, shade, solubility, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing the results is provided with each shipment to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	Dark Blue to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 90.0%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 8.0%
Water Solubility	Clear Solution at 1%
Ash Content (Sulfated)	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

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