Description

7-[[4-[[4-[[4-[(4-Aminobenzoyl)Amino]-2-Methylphenyl]Azo]Benzoyl]Amino]-2-Methylphenyl]Azo]-1,3-Naphthalenedisulfonic Acid is a high-purity, complex azo dye intermediate characterized by its disulfonic acid functionality. This compound matters for its role as a critical precursor in the synthesis of specialized, high-value dyes and pigments, offering precise color properties and structural integrity. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, water-soluble azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics requiring specific hue and fastness properties.
• Research & Development: Employed in chemical R&D for developing novel chromophores and functional dyes with tailored properties.
• Analytical Chemistry: Can be utilized as a reagent or standard in chromatographic analysis and dye characterization studies.
• Functional Material Synthesis: Potential use in creating dyes for non-textile applications, such as in optical data storage or sensitizers.

Basic Information

Product Name	7-[[4-[[4-[[4-[(4-Aminobenzoyl)Amino]-2-Methylphenyl]Azo]Benzoyl]Amino]-2-Methylphenyl]Azo]-1,3-Naphthalenedisulfonic Acid
CAS No.	71033-07-3
Molecular Formula	C38H30N8O8S2
Molecular Weight	790.82 g/mol
Synonyms	7-[[4-[[4-[[4-[(4-Aminobenzoyl)amino]-2-methylphenyl]azo]benzoyl]amino]-2-methylphenyl]azo]naphthalene-1,3-disulfonic acid; Acid Dye Intermediate 71033-07-3; Azo Dye Precursor; 1,3-Naphthalenedisulfonic acid, 7-[[4-[[4-[[4-[(4-aminobenzoyl)amino]-2-methylphenyl]azo]benzoyl]amino]-2-methylphenyl]azo]-; Disulfonated Azo Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and NMR to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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