Description

n-(2-Acryloyloxyethyl)-N,n-Dimethyl-n-(3-Sulfopropyl)Ammonium Betaine is a specialized zwitterionic monomer featuring both a polymerizable acrylate group and a permanent sulfobetaine moiety. This unique structure is critical for imparting exceptional hydrophilicity, anti-fouling properties, and permanent dipole characteristics to polymeric materials. It is an essential raw material for manufacturers seeking to enhance the performance and functionality of advanced coatings, hydrogels, and separation membranes. Industries focused on biomedical devices, water treatment, and personal care formulations rely on this monomer to create products with superior surface properties and stability.

Application

• Antifouling & Hydrophilic Coatings: A key monomer for creating non-fouling surface coatings on marine vessels, medical implants (e.g., catheters, sensors), and filtration membranes to prevent biofilm and protein adhesion.
• Smart Hydrogels & Contact Lenses: Used in the synthesis of superabsorbent, biocompatible hydrogels for contact lenses, wound dressings, and drug delivery systems due to its excellent water retention and comfort properties.
• Water Treatment & Separation Membranes: Incorporated into reverse osmosis (RO), ultrafiltration (UF), and forward osmosis (FO) membranes to dramatically improve surface hydrophilicity, reducing fouling and enhancing water flux and longevity.
• Personal Care & Cosmetic Polymers: Serves as a functional monomer in hair fixatives, skin care products, and cosmetic formulations to improve moisture retention, feel, and compatibility with other ingredients.
• Enhanced Oil Recovery (EOR) Polymers: Utilized in synthesizing viscosifiers and friction reducers for oilfield applications, where thermal stability and salt tolerance are required.
• Chromatography Media & Bioconjugation: Employed in the functionalization of silica or polymer beads for HPLC columns and in creating zwitterionic surfaces for reducing non-specific binding in diagnostic assays.

Basic Information

Product Name	n-(2-Acryloyloxyethyl)-N,n-Dimethyl-n-(3-Sulfopropyl)Ammonium Betaine
CAS No.	88992-91-0
Molecular Formula	C12H23NO6S
Molecular Weight	309.38 g/mol
Synonyms	SPE; 3-[(2-Acryloyloxyethyl)dimethylammonio]propane-1-sulfonate; N,N-Dimethyl-N-(3-sulfopropyl)-2-[(1-oxo-2-propen-1-yl)oxy]ethanaminium hydroxide, inner salt; Sulfobetaine acrylate; SBMA; N-(2-Acryloyloxyethyl)-N,N-dimethylammonio propanesulfonate; DMAPS; Acrylamido sulfobetaine; Zwitterionic acrylate monomer
EINECS	Contact for details

Quality Control

Our n-(2-Acryloyloxyethyl)-N,n-Dimethyl-n-(3-Sulfopropyl)Ammonium Betaine is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with relevant industry standards. Key parameters monitored include assay (by HPLC), residual monomer content, moisture (Karl Fischer), and ionic impurity levels. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect purity and polymerization performance. Keep away from heat sources and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (Karl Fischer)	≤ 1.0%
Acrylic Acid (HPLC)	≤ 0.5%
pH (5% aqueous solution)	6.0 - 8.0
Color (APHA)	≤ 100

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