Description

1,3-Propanesultone CAS NO 1120-71-4 is a versatile sulfonic acid derivative and a key sulfonating agent used in the synthesis of various specialty chemicals. Its primary value lies in its ability to introduce the highly polar and water-soluble sulfonate group into target molecules, significantly altering their physical and chemical properties. This makes it an essential intermediate for manufacturers in the pharmaceutical, agrochemical, and polymer industries seeking to enhance product solubility, stability, or biological activity.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing sulfonated drugs, including certain antivirals, enzyme inhibitors, and zwitterionic compounds.
• Agrochemical Synthesis: Used to produce sulfonated herbicides, fungicides, and plant growth regulators to improve efficacy and environmental profile.
• Polymer Modification: Serves as a monomer or modifier for creating sulfonated polymers, ion-exchange resins, and specialty polyelectrolytes with enhanced conductivity or hydrophilicity.
• Surfactant & Detergent Industry: Intermediate in the production of advanced anionic surfactants and hydrotropes for high-performance cleaning formulations.
• Electrolyte Additive: Investigated for use in lithium-ion battery electrolytes to improve stability and cycle life by forming a protective solid-electrolyte interphase (SEI) layer.
• Chemical Research & Development: A valuable reagent in organic synthesis for introducing sulfopropyl groups, enabling the creation of novel chemical entities for various R&D applications.

Basic Information

Product Name	1,3-Propanesultone
CAS No.	1120-71-4
Molecular Formula	C3H6O3S
Molecular Weight	122.14 g/mol
Synonyms	1,3-Propane sultone; 3-Hydroxy-1-propanesulfonic acid sultone; 3-Hydroxypropane-1-sulfonic acid γ-sultone; Propane-1,3-sultone; 1,2-Oxathiolane 2,2-dioxide; 3-Propiolactone, 1,1-dioxide; Trimethylene sulfonic acid sultone; γ-Propane sultone
EINECS	214-317-9

Quality Control

Our 1,3-Propanesultone is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay by titration or HPLC, identification by FT-IR, and control of key impurities and water content. A Certificate of Analysis (COA) detailing all test results is provided to ensure traceability and compliance with your specific requirements. We adhere to cGMP principles where applicable to support our customers in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its properties of being light-sensitive and easily oxidized, it is recommended to store the material under an inert atmosphere (e.g., nitrogen) for long-term stability. Keep away from heat, open flames, and incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Melting Point	30 - 33 °C
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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