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Product Line: Electronic Chemicals

1,3-Propanesultone

CAS 1120-71-4

Molecular structure of 1,3-Propanesultone

CAS · 1120-71-4

01

Product Overview

1,3-Propanesultone is a high-purity battery-materials supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.

02

Product Specifications

Property Specification
Grade Battery grade
Appearance (35°C) Colorless to light yellow liquid or crystals, no solid impurity
Purity (GC) 99.9% min
Water (K.F) 80 ppm max
Acid (HF) 30 ppm max
Colority (Pt-Co) 30 max
Single impurity (K, Na, Fe, Ni, Cr, Mn, Al, Mg, Ca, Ba, Cd, Cu, Pb, Zn) 1 ppm max
03

Applications

1. Electrolyte Additive in Lithium-ion Batteries

1,3-Propanesultone丨CAS 1120-71-4 is widely used as a film-forming additive in electrolytes for lithium-ion batteries (LIBs):

● Solid Electrolyte Interphase (SEI) formation: It decomposes at the electrode surface during the initial charge cycle to form a stable SEI layer, which protects the anode and enhances battery lifespan.

● Improved cycling stability: The SEI formed by 1,3-propanesultone contributes to lower impedance and enhanced capacity retention during repeated charge/discharge cycles.

● Thermal stability: It helps improve the thermal performance of LIBs, supporting safety and efficiency at elevated temperatures.

2. Synthesis of Zwitterionic Surfactants and Polymers

1,3-Propanesultone丨CAS 1120-71-4 is a key precursor in the synthesis of zwitterionic compounds, especially sulfobetaines, which are used in:

● Surfactants: These compounds are non-ionic and pH-stable, ideal for applications in cosmetics, detergents, and antifouling coatings.

● Biocompatible polymers: Sulfobetaine-functionalized polymers resist protein adsorption and biofouling, making them ideal for medical devices, biosensors, and drug delivery systems.

3. Pharmaceutical Intermediates

Due to its reactivity with amines and alcohols, 1,3-propanesultone is employed in the modification of active pharmaceutical ingredients (APIs) or intermediates:

● Quaternization agent: It introduces sulfonate functional groups to enhance water solubility or modify the pharmacokinetics of compounds.

● Biofunctional molecules: Useful in preparing molecules with ionic tags for bioanalytical and diagnostic purposes.

4. Ion-exchange Resin and Membrane Modification

In the field of materials science, 1,3-propanesultone is used to modify membranes and resins:

● Ion-exchange resins: Incorporation of sulfonic acid groups through 1,3-propanesultone allows the creation of cation-exchange materials.

● Fuel cell membranes: It is used to introduce sulfonic acid functionalities in polymeric membranes, improving proton conductivity.

04

Benefits

1. High Reactivity for Functionalization

1,3-Propanesultone's strained ring structure enables efficient ring-opening reactions with various nucleophiles, allowing for rapid and selective modification of target molecules.

2. Versatile Precursor for Functional Materials

It serves as a key building block for a wide range of materials, from ionic liquids to functional monomers, supporting innovations in energy storage, coatings, and biotechnology.

3. Enhanced Electrochemical Performance in LIBs

In lithium-ion battery applications, its use helps to extend battery life, improve safety, and maintain capacity over time by contributing to a robust SEI layer.

4. Wide Industrial Applicability

Its ability to introduce sulfonate groups makes it suitable across sectors, including electronics, cosmetics, environmental engineering, and healthcare.

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05

Conclusion

A concise summary and suitability assessment for this product is available on request. Contact our team to discuss whether it fits your process and quality requirements.