1,3-Propane sultone is an organic compound with the chemical formula C3H6O3S, commonly used in organic synthesis and the pharmaceutical industry. Currently, this product is mainly applied in the following areas: new energy sector, chemical and materials industry, medicine and biochemistry, photosensitive materials and fine chemicals, environmental protection, and other industrial applications.

I. New Energy Sector – Key Material for Lithium Battery Performance Enhancement

1. ‌Electrolyte Additive‌: As a core additive for lithium-ion battery electrolytes, 1,3-propane sultone can suppress side reactions on electrode surfaces (e.g., metal ion dissolution), significantly improving the battery's initial capacity and cycle life. Particularly in high-temperature environments, it reduces gas generation, enhancing safety. By optimizing the stability of the electrode/electrolyte interface, it extends battery lifespan and improves high/low-temperature storage performance, making it suitable for power batteries, energy storage batteries, and other fields. With the rapid development of the new energy vehicle and energy storage industries, its demand in lithium batteries continues to grow, making it a crucial upstream raw material in the new energy supply chain.

II. Chemical and Materials Industry – Versatile Sulfonating Agent and Intermediate

1. ‌Universal Sulfonating Agent‌: Under mild conditions, it introduces sulfonic acid groups to compounds, imparting properties such as hydrophilicity and antistatic characteristics. It is widely used in synthesizing intermediates for electroplating additives (e.g., PPS, UPS, DPS, MPS). It can also serve as a raw material for surfactants, applied in zwitterionic surfactants, cosmetic emulsifiers, and industrial lubricants.
2. ‌Electroplating and Surface Treatment‌: As a key raw material for electroplating brighteners and buffering agents, it improves coating uniformity and corrosion resistance, making it suitable for precision electroplating processes in electronic components, automotive parts, and other applications.

III. Medicine and Biochemistry – Core Intermediate for Drug Synthesis

1. ‌Pharmaceutical Intermediate‌: It participates in the synthesis of antibacterial and antiviral drugs, with its stable chemical properties and high reactivity providing a foundation for drug molecule structural modifications. In biochemistry, it is used for protein modification and enzyme immobilization research.
2. ‌Biological Buffer‌: Through sulfopropylation reactions, sulfonic acid groups can be precisely introduced into traditional buffer molecular frameworks, endowing them with stronger ion regulation capabilities and chemical stability. These modified buffers exhibit excellent buffering efficiency across a wide pH range (5.0–8.5), particularly suitable for biochemical reaction systems under high salt concentrations or extreme temperature conditions.

IV. Photosensitive Materials and Fine Chemicals

1. ‌Photosensitive Dyes and Inks‌: As a precursor for sensitizing dyes, it enhances the photosensitivity and development efficiency of photosensitive materials, applied in printing inks, films, and photoresist fields. In the leather industry, it is used for synthesizing tanning agents, improving leather softness and dyeing uniformity.

V. Environmental Protection and Other Industrial Applications

1. ‌Environmental Protection‌: Used in wastewater treatment processes to remove heavy metal ions or organic pollutants through sulfonation reactions.
2. ‌Petrochemical Industry‌: Serves as a raw material for synthesizing fluorinated organic chemicals, applied in fluorination reactions and specialty material production.

VI. Emerging Fields Exploration
In emerging fields such as flexible electronics and wearable devices, its antistatic properties are utilized for functional coating development.

With its sulfonation capability, interface modification characteristics, and chemical stability, 1,3-propane sultone has deeply penetrated over ten fields, including lithium batteries, medicine, electroplating, and environmental protection, becoming an indispensable multifunctional raw material in the fine chemical industry. As technology advances, its application potential in the new energy and high-end materials sectors will further expand.