Description

5-(3-Sulphopropoxy)Isophthalic Acid is a specialized, high-purity organic acid derivative featuring both carboxylic acid and sulfonic acid functionalities. This compound is valued for its role as a key monomer and intermediate in the synthesis of advanced polymers and specialty chemicals. It is primarily sought by manufacturers in the polymer, pharmaceutical, and fine chemical industries for applications requiring precise molecular architecture and ionic functionality.

Application

• Polymer Synthesis: A critical monomer for producing sulfonated polyesters, polyamides, and polyimides, imparting enhanced hydrophilicity, dyeability, and ion-exchange properties.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and drug conjugates that benefit from its bifunctional, water-solubilizing character.
• Dye & Pigment Manufacturing: Serves as a building block for creating water-soluble dyes and high-performance pigments with improved application properties.
• Ion-Exchange Resins: Acts as a functional monomer in the production of cation-exchange resins for water treatment and purification processes.
• Surface Modification Agents: Utilized to modify material surfaces, enhancing wettability, adhesion, and biocompatibility in coatings and biomedical materials.
• Crosslinking Agent: Employed in formulations for coatings, adhesives, and hydrogels where ionic crosslinking is desired.

Basic Information

Product Name	5-(3-Sulphopropoxy)Isophthalic Acid
CAS No.	93820-01-0
Molecular Formula	C11H12O8S
Molecular Weight	304.27 g/mol
Synonyms	5-(3-Sulfopropoxy)isophthalic acid; 3,5-Dicarboxybenzenepropanesulfonic acid; Isophthalic acid, 5-(3-sulfopropoxy)-; 5-(3-Sulfopropoxy)-1,3-benzenedicarboxylic acid; 93820-01-0; SPIA; 5-(3-Sulphopropoxy)benzene-1,3-dicarboxylic acid
EINECS	Contact for details

Quality Control

Our 5-(3-Sulphopropoxy)Isophthalic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for critical applications. Certificates of Analysis (COA) documenting all test results are provided to guarantee traceability, consistency, and compliance with your technical requirements.

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 to prevent absorption of atmospheric moisture, which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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