Description

4-Mercaptoisophthalic Acid is a high-purity, multifunctional aromatic dicarboxylic acid featuring a reactive thiol group. This unique molecular structure makes it a valuable building block for synthesizing advanced materials with tailored properties. It is essential for R&D and production in industries requiring specialty monomers and polymer modifiers, such as advanced polymer chemistry and pharmaceutical intermediate manufacturing.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules.
• Polymer Modification: Used to introduce thiol functional groups into polymer backbones for cross-linking, adhesion promotion, and property enhancement.
• Liquid Crystal & OLED Materials: Acts as a core building block for creating novel organic electronic materials and liquid crystal compounds.
• Metal-Organic Frameworks (MOFs): Employed as a functional linker to construct MOFs with specific porosity and catalytic properties.
• Chelating Agent Synthesis: Utilized in the production of specialized chelating ligands for metal ion binding and catalysis.
• Surface Functionalization: Applied to modify material surfaces (e.g., nanoparticles, electrodes) to alter wettability, biocompatibility, or conductivity.
• Advanced Adhesives & Coatings: Incorporated into formulations to improve durability, chemical resistance, and bonding strength.
• Research & Development: A critical reagent for academic and industrial research in organic synthesis and material science.

Basic Information

Product Name	4-Mercaptoisophthalic Acid
CAS No.	214341-16-9
Molecular Formula	C8H6O4S
Molecular Weight	198.20 g/mol
Synonyms	4-Sulfanylbenzene-1,3-dicarboxylic acid; 4-Thiolisophthalic Acid; 1,3-Benzenedicarboxylic acid, 4-mercapto-; Isophthalic acid, 4-mercapto-; 4-Mercapto-1,3-benzenedicarboxylic acid; MIBA
EINECS	Contact for details

Quality Control

Our 4-Mercaptoisophthalic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and titration, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
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.