Description

Hexasodium 8,8'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bisnaphthalene-2,3,6-Trisulphonate CAS NO 75268-69-8 is a high-purity, water-soluble anionic dye belonging to the class of polyazo compounds. This specialized chemical is valued for its strong and stable color properties, making it a critical component in advanced industrial coloration processes. It is primarily sought by manufacturers in the textile, paper, and specialty ink industries for dyeing and printing applications where consistent color fastness and performance are required.

Application

• Textile Dyeing: Used for dyeing natural and synthetic fibers, particularly where bright, wash-fast shades are required.
• Paper Coloring: Employed in the production of colored papers, including specialty packaging and decorative papers.
• Ink Formulation: A key pigment for manufacturing inks used in flexographic, gravure, and inkjet printing.
• Leather Finishing: Applied in the dyeing process for leather goods to achieve uniform and vibrant colors.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific chromogenic properties.
• Industrial Marker Fluids: Suitable for coloring non-permanent and safety marker fluids.

Basic Information

Item	Details
Product Name	Hexasodium 8,8'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bisnaphthalene-2,3,6-Trisulphonate
CAS No.	75268-69-8
Molecular Formula	C45H28N6Na6O19S6
Molecular Weight	Approx. 1294.0 g/mol
Synonyms	Acid Black 210; C.I. 300310; Hexasodium 8,8'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(naphthalene-2,3,6-trisulphonate); 8,8'-[Carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[naphthalene-2,3,6-trisulfonic acid] hexasodium salt; Polyazo Black Dye; Anionic Polyazo Dye; Direct Black 210 (related class); CAS 75268-69-8
EINECS	Contact for details

Quality Control

Our production of Hexasodium 8,8'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bisnaphthalene-2,3,6-Trisulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and solubility meet defined specifications. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	Max. 20 ppm

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