Description

Sodium 5,8-Dicarboxynaphthalene-2-Sulfonate is a high-purity, multi-functional aromatic sulfonate salt with significant industrial utility. Its molecular structure, featuring both sulfonate and carboxylate groups, provides excellent water solubility and chelating properties, making it a valuable intermediate and functional additive. This compound is essential for manufacturers in the dye, pigment, and specialty chemical sectors seeking to enhance product performance and process efficiency.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing high-value azo dyes, acid dyes, and reactive dyes, contributing to color fastness and brightness.
• Textile Auxiliary: Used as a leveling agent, dispersant, or chelating agent in dyeing and printing processes to improve uniformity and quality.
• Surfactant and Detergent Formulation: Functions as a hydrotrope and coupling agent in liquid detergent concentrates and industrial cleaning products.
• Paper and Pulp Industry: Acts as a dispersant for pigments and fillers, and as a chelating agent in bleaching processes to control metal ions.
• Water Treatment Chemical: Serves as a scale inhibitor and dispersant in cooling water and boiler water treatment systems.
• Pharmaceutical Intermediate: Utilized in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Research & Development: Employed in academic and industrial R&D for developing new functional materials and studying sulfonate chemistry.

Basic Information

Product Name	Sodium 5,8-Dicarboxynaphthalene-2-Sulfonate
CAS No.	76214-10-3
Molecular Formula	C12H5NaO7S
Molecular Weight	316.21 g/mol
Synonyms	5,8-Dicarboxynaphthalene-2-sulfonic acid sodium salt; Naphthalene-2-sulfonic acid, 5,8-dicarboxy-, sodium salt; 2-Naphthalenesulfonic acid, 5,8-dicarboxy-, sodium salt (1:1); Dinaphthionic acid derivative; Sodium dinaphthionate derivative; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our Sodium 5,8-Dicarboxynaphthalene-2-Sulfonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical specifications. Our quality commitment ensures the material meets the stringent requirements for use in intermediate synthesis and functional applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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