Description

5,7-Disulfonaphthalene-1,4-Dicarboxylic Acid is a specialized, multi-functional aromatic sulfonic acid derivative. This compound is valued for its unique molecular architecture, featuring both sulfonic acid and carboxylic acid groups, which makes it a versatile intermediate and functional component in advanced chemical synthesis. It is primarily sought by manufacturers in the dye and pigment, pharmaceutical, and specialty polymer industries for creating high-performance materials with enhanced solubility, binding, or catalytic properties.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, reactive dyes, and high-value pigments, imparting excellent water solubility and color fastness.
• Pharmaceutical Synthesis: Serves as a crucial intermediate in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Polymer Modification: Used to introduce sulfonate groups into polymers, enhancing their hydrophilicity, antistatic properties, and ion-exchange capacity for specialty membranes and coatings.
• Catalyst and Ligand Synthesis: Employed in the preparation of metal-organic frameworks (MOFs) and as a ligand or co-catalyst in various organic transformations.
• Analytical Reagent: Utilized as a standard or reagent in analytical chemistry for calibration and method development.
• Electroplating Additives: Functions as a brightener or leveling agent in advanced electroplating baths.

Basic Information

Item	Detail
Product Name	5,7-Disulfonaphthalene-1,4-Dicarboxylic Acid
CAS No.	1267804-17-0
Molecular Formula	C12H8O10S2
Molecular Weight	376.32 g/mol
Synonyms	1,4-Naphthalenedicarboxylic acid, 5,7-disulfo-; 5,7-Disulfo-1,4-naphthalenedicarboxylic acid; Naphthalene-1,4-dicarboxylic acid-5,7-disulfonic acid; 1,4-Dicarboxy-5,7-disulfonaphthalene; 5,7-Disulfonaphthalene-1,4-dioic acid
EINECS	Contact for details

Quality Control

Every batch of 5,7-Disulfonaphthalene-1,4-Dicarboxylic Acid is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards, and our quality control includes rigorous analytical testing for identity, purity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment.

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). This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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