Description

Tetrasodium 7,7'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Naphthalene-1,3-Disulphonate) is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing specific, high-performance dyes and pigments, particularly in applications demanding color stability and chemical resistance. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require reliable, consistent raw materials for their production processes.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloration.
• Key component in the production of industrial inks for packaging and printing applications.
• Used in the formulation of specialty colorants for coatings and plastics.
• Potential use as a biological stain or histochemical reagent in laboratory settings.
• Research and development of novel functional dyes for optical or electronic applications.
• Manufacturing of colorants for paper and leather products.

Basic Information

Product Name	Tetrasodium 7,7'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Naphthalene-1,3-Disulphonate)
CAS No.	12217-64-0
Molecular Formula	C44H30N6Na4O16S4
Molecular Weight	1108.94 g/mol
Synonyms	Acid Blue 158; C.I. 14880; Tetrasodium 6,6'-[Carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[4-hydroxy-2-naphthalenesulfonate]; Direct Blue 158; 7,7'-[Carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[4-hydroxy-2-naphthalenesulfonic acid] tetrasodium salt; C.I. Acid Blue 158; Benzenesulfonic acid, 7,7'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[4-hydroxy-2-naphthalenesulfonic acid] tetrasodium salt
EINECS	Contact for details

Quality Control

Our Tetrasodium 7,7'-[Carbonylbis[Imino(5-Methoxy-2-Methyl-4,1-Phenylene)Azo]]Bis(Naphthalene-1,3-Disulphonate) is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. Certificates of Analysis (COA) documenting purity, identity, and other critical 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, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark blue to violet powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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