Description

2-Sulfo-1,4-Benzenedicarboxylic Acid 1,4-Dimethyl Ester Sodium Salt is a high-purity, functionalized organic intermediate with significant industrial utility. This compound is valued for its unique combination of sulfonate and diester groups, which impart valuable properties for advanced synthesis and material modification. It serves as a critical building block for manufacturers in the pharmaceutical, agrochemical, polymer, and specialty dye industries, where precise chemical functionality is required.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring sulfonated aromatic motifs for enhanced solubility or biological activity.
• Polymer Modification: Acts as a monomer or comonomer for producing specialty polyesters and polyamides with ionic character, improving dyeability, antistatic properties, or adhesion.
• Agrochemical Synthesis: Serves as a key precursor in the manufacture of modern herbicides and plant growth regulators.
• Dye and Pigment Manufacturing: Employed in the production of water-soluble dyes and high-performance pigments due to its sulfonate group.
• Surfactant and Detergent Industry: Functions as a starting material for synthesizing specialized anionic surfactants with specific hydrophobic/hydrophilic balances.
• Liquid Crystal and Electronic Materials: Used in the development of advanced organic materials for displays and electronic applications.
• Chelating Agent Precursor: Can be further processed to create ligands for metal complexation in various industrial processes.

Basic Information

Product Name	2-Sulfo-1,4-Benzenedicarboxylic Acid 1,4-Dimethyl Ester Sodium Salt
CAS No.	31314-30-4
Molecular Formula	C10H9NaO7S
Molecular Weight	296.22 g/mol
Synonyms	Sodium 2-sulfo-1,4-benzenedicarboxylate 1,4-dimethyl ester; Dimethyl 2-sulphoterephthalate sodium salt; 2-Sulfoterephthalic acid dimethyl ester sodium salt; Monosodium 2-sulfoterephthalate dimethyl ester; 1,4-Benzenedicarboxylic acid, 2-sulfo-, 1,4-dimethyl ester, sodium salt; Sulfoterephthalic acid dimethyl ester sodium salt; STP-DME Na salt
EINECS	Contact for details

Quality Control

Our 2-Sulfo-1,4-Benzenedicarboxylic Acid 1,4-Dimethyl Ester Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and compliance with agreed specifications. Comprehensive Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided with every shipment to support your quality assurance protocols.

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 product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

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

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