Description

Tetrasodium 3,3'-[Carbonylbis[Imino(3-Methoxy-4,1-Phenylene)Azo]]Bisnaphthalene-1,5-Disulphonate is a high-purity, water-soluble anionic dye belonging to the class of disazo compounds. This compound is valued for its strong and stable color properties, making it a critical component in specialized industrial applications where consistent performance is required. It is primarily sought by manufacturers in the textile, paper, and specialty ink industries for its excellent dyeing and printing capabilities.

Application

• Textile Dyeing: Used for dyeing natural and synthetic fibers, particularly where high wash and light fastness are required.
• Paper Coloration: Employed in the production of colored papers, including specialty packaging and decorative papers.
• Ink Manufacturing: Serves as a key pigment for specialty inks, including those used in flexographic and packaging printing.
• Leather Finishing: Applied in the dyeing process for leather goods to achieve vibrant and durable colors.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific affinity.
• Research & Development: Utilized as a standard or intermediate in chemical research and for analytical purposes.

Basic Information

Product Name	Tetrasodium 3,3'-[Carbonylbis[Imino(3-Methoxy-4,1-Phenylene)Azo]]Bisnaphthalene-1,5-Disulphonate
CAS No.	28706-22-1
Molecular Formula	C45H28N6Na4O16S4
Molecular Weight	1125.0 g/mol (approx.)
Synonyms	Acid Blue 158; C.I. 14880; Direct Blue 158; Tetrasodium 6,6'-[Carbonylbis[imino(2-methoxy-5-methyl-4,1-phenylene)azo]]bis(1,5-naphthalenedisulfonate); 28706-22-1; C.I. Acid Blue 158; Disodium 6,6'-[carbonylbis[imino(2-methoxy-5-methyl-4,1-phenylene)azo]]bis(4-hydroxy-5-naphthalene-2,7-disulphonate); Aizen Brilliant Acid Blue 6BH
EINECS	Contact for details

Quality Control

Our Tetrasodium 3,3'-[Carbonylbis[Imino(3-Methoxy-4,1-Phenylene)Azo]]Bisnaphthalene-1,5-Disulphonate is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for color strength, purity, and solubility. Certificates of Analysis (COA) detailing key parameters 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 room temperature (15-25°C). Keep away from incompatible materials and moisture. This product is light-sensitive (store away from light).

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)
Moisture Content	≤ 5.0%
Water Solubility	Clear Solution
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.