Description

3-Sulfopropyl Methacrylate, Potassium Salt is a highly functional, water-soluble anionic monomer that serves as a key building block for advanced polymeric materials. Its value lies in its ability to impart permanent negative charge, hydrophilicity, and ionic conductivity to polymers, enabling the creation of specialized materials with tailored properties. This product is essential for manufacturers in the coatings, adhesives, hydrogels, ion-exchange resins, and specialty polymer sectors seeking to enhance performance characteristics such as adhesion, anti-fouling, and moisture retention.

Application

• Hydrogel Synthesis: A critical component for creating superabsorbent polymers (SAPs), contact lenses, wound dressings, and drug delivery systems due to its excellent water-binding capacity and biocompatibility.
• Ion-Exchange Resins & Membranes: Used to manufacture resins for water purification, chromatography, and electrodialysis membranes, leveraging its sulfonate group for efficient ion capture and exchange.
• Coatings & Adhesives: Imparts improved adhesion to difficult substrates, enhanced dispersion stability, and anti-static properties in water-based paints, pressure-sensitive adhesives, and textile coatings.
• Conductive Polymers: Serves as a dopant or co-monomer in the production of polymers for antistatic coatings, solid polymer electrolytes in batteries, and biosensor applications.
• Dispersants & Stabilizers: Acts as a polymeric dispersant for pigments, ceramics, and cement, providing electrostatic stabilization in aqueous suspensions.
• Biomedical & Diagnostic Materials: Utilized in the fabrication of biocompatible surfaces, protein-resistant coatings, and matrices for diagnostic assays.

Basic Information

Product Name	3-Sulfopropyl Methacrylate, Potassium Salt
CAS No.	31098-21-2
Molecular Formula	C7H11KO5S
Molecular Weight	246.32 g/mol
Synonyms	Potassium 3-sulfopropyl methacrylate; 2-Methyl-2-propenoic acid 3-sulfopropyl ester potassium salt; SPM; SPMA; 3-(Methacryloyloxy)propane-1-sulfonic acid potassium salt; 2-Propenoic acid, 2-methyl-, 3-sulfopropyl ester, potassium salt; Methacryloyloxypropyl sulfonate potassium salt; Potassium sulfopropyl methacrylate
EINECS	Contact for details

Quality Control

Our 3-Sulfopropyl Methacrylate, Potassium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the highest standards for purity and consistency, suitable for demanding applications in research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent caking and hydrolysis. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
pH (5% aqueous solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 10 ppm

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