Description

Tetrasodium 3,3'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo-4,1-Phenylenecarbonylimino]]Bis[5-Sulphonatosalicylate] is a high-purity, water-soluble anionic dye and complexing agent characterized by its distinctive chemical structure. This compound is valued for its strong chelating properties and ability to form stable complexes with various metal ions, making it a critical functional additive in several industrial processes. It is primarily sought after by manufacturers in the textile, paper, and specialty chemical sectors for applications requiring precise color control and metal ion sequestration.

Application

• Textile Dyeing and Printing: Used as a direct or complex dye for cotton, wool, and nylon, providing excellent color fastness and brightness.
• Paper Coloring: Employed in the production of colored papers and boards, offering good affinity for cellulose fibers.
• Metal Chelation in Detergents: Functions as a builder and water softener in industrial cleaning formulations by sequestering calcium and magnesium ions.
• Analytical Chemistry Reagent: Serves as a colorimetric indicator or complexometric agent in laboratory analysis for metal ion detection.
• Ink Manufacturing: Imparts color and stability to specialty inks, including those for packaging and security printing.
• Biological Staining: Potential use in histological stains for microscopy due to its affinity for specific tissue components.

Basic Information

Product Name	Tetrasodium 3,3'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo-4,1-Phenylenecarbonylimino]]Bis[5-Sulphonatosalicylate]
CAS No.	6420-28-6
Molecular Formula	C48H30N8Na4O18S2
Molecular Weight	~1156.9 g/mol
Synonyms	Direct Blue 86; C.I. 74180; Tetrasodium 3,3'-[Carbonylbis(imino-4,1-phenylenecarbonylimino(2-methyl-4,1-phenylene)azo)]bis(5-sulfonatosalicylate); Solamine Blue 3GL; Amanil Sky Blue 3G; Pontamine Blue 3G; Chlorantine Fast Blue 3GL; Diazol Light Blue 3G
EINECS	229-178-9

Quality Control

Our production of Tetrasodium 3,3'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo-4,1-Phenylenecarbonylimino]]Bis[5-Sulphonatosalicylate] adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and solubility. Our quality commitment supports compliance with relevant industry standards for dyes and specialty chemicals.

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); therefore, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark Blue to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Water Solubility	Clear Solution at 1% w/v
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm

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