Description

4-Amino-5-Hydroxy-3-[[4'-[(4-Hydroxy-m-Tolyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex polyazo structure is engineered to deliver exceptional color strength and specific hue properties for demanding applications. This compound is primarily sought by manufacturers in the specialty chemicals sector for synthesizing high-performance dyes and pigments. The product, identified by CAS No. 85750-06-7, is supplied with rigorous quality control to ensure batch-to-batch consistency for industrial processes.

Application

This advanced azo dye intermediate serves as a critical building block in the production of sophisticated colorants. Its primary and related applications include:

• Primary use as a key intermediate for synthesizing high-grade, polyazo direct dyes for the textile industry.
• Manufacture of specialized pigments and dyes for inks, including those used in packaging and security printing.
• Potential use in the formulation of colorants for leather and other specialty materials requiring deep, stable shades.
• Research and development of novel functional dyes for non-textile applications, such as in optical data storage or sensors.
• As a standard or reference material in analytical chemistry and quality control laboratories for dye analysis.

Basic Information

Product Name	4-Amino-5-Hydroxy-3-[[4'-[(4-Hydroxy-m-Tolyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	85750-06-7
Molecular Formula	C41H28N8O8S2•2Na (Contact for exact stoichiometry)
Molecular Weight	~902.8 g/mol (Contact for details)
Synonyms	Sodium 4-Amino-5-hydroxy-3-[[4'-[(4-hydroxy-m-tolyl)azo][1,1'-biphenyl]-4-yl]azo]-6-(phenylazo)naphthalene-2,7-disulphonate; Polyazo Direct Dye Intermediate; CI Direct Red 254 Intermediate (related); Azo Dye Precursor 85750-06-7; Trisazo Dye Intermediate; Water-soluble Azo Compound; Biphenyl-based Azo Dye Salt; [1,1'-Biphenyl]-4-amine derivative, azo-coupled.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems. Every batch is analyzed using advanced techniques like HPLC to confirm identity, purity, and the absence of critical impurities. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided to ensure full traceability and compliance with your process requirements. We are committed to supplying material that meets consistent, high-purity standards for reliable industrial synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 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.