Description

Tetrasodium 5-[[4'-[[8-Amino-7-[[5-Amino-2-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure provides exceptional chromophore properties, making it a critical precursor for synthesizing high-value, colorfast dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, durable colors with excellent light and wash fastness.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton and cellulose fiber dyeing.
• Direct Dye Production: Used in the manufacture of direct dyes for paper, leather, and textile applications requiring deep, penetrating colors.
• Pigment Manufacturing: Serves as a precursor for creating organic pigments with enhanced thermal and chemical stability for plastics and coatings.
• Inkjet Ink Formulations: Utilized in the production of advanced colorants for high-quality digital textile and industrial inkjet inks.
• Functional Dye Synthesis: Intermediate for dyes used in specialized applications, including optical data storage and liquid crystal displays (LCDs).
• Research & Development: Serves as a standard or experimental compound in R&D labs for developing new chromogenic materials and studying azo chemistry.

Basic Information

Product Name	Tetrasodium 5-[[4'-[[8-Amino-7-[[5-Amino-2-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate
CAS No.	94158-41-5
Molecular Formula	C45H28N10Na4O16S4
Molecular Weight	~1193.0 g/mol (Contact for exact details)
Synonyms	5-[[4'-[[8-Amino-7-[[5-Amino-2-[(4-Sulfonatophenyl)Azo]Phenyl]Azo]-1-Hydroxy-3,6-Disulfonato-2-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylic Acid, Tetrasodium Salt; Tetrasodium 5-[(4'-[(8-Amino-7-[(5-Amino-2-[(4-Sulfophenyl)Azo]Phenyl)Azo]-1-Hydroxy-3,6-Disulfo-2-Naphthyl)Azo][1,1'-Biphenyl]-4-Yl)Azo]Salicylate; C.I. Direct Yellow 142 (related); Polyazo Dye Intermediate; Water-Soluble Azo Dye Precursor; Tetrasodium Salt of Azo Salicylic Acid Derivative
EINECS	Contact for details

Quality Control

Our Tetrasodium 5-[[4'-[[8-Amino-7-[[5-Amino-2-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]Salicylate is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and wet chemistry methods for functional group verification, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	7.0 - 9.0

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