1,3-Butanesultone CAS 3289-23-4 – Bild 2

1,3-Butanesultone CAS 3289-23-4 – Bild 3

1,3-Butanesultone CAS 3289-23-4

CAS: 3289-23-4
Reinheit: 99%
Molecular Formula: C4H8O3S
Molecular Weight: 136.17
Speicherung Zeitraum: 2 Jahre
Synonyms: 1,2-OXATHIOLANE,5-Methyl Oxathiopentyl 2,2-dioxide，5-Methyl-1,2-oxathiolane 2,2-dioxide.

What is 1,3-Butanesultone CAS 3289-23-4？

1,3-Butanesultone (CAS 3289-23-4) is a highly reactive sulfoalkylating agent used in advanced chemical synthesis. As a cyclic sulfonate ester, it enables the introduction of sulfonate functional groups into organic molecules, making it an essential intermediate in specialty chemicals, ionic liquids, polymer materials, surfactants, and electrolytes.

1,3-Butanesultone is a cyclic organic compound classified as a sultone—a molecule containing a cyclic ester structure with a sulfur atom (replacing the usual carbonyl carbon in esters). Its chemical formula is C₄H₈O₃S, and it features a four-carbon alkane chain forming a ring with a sulfonyl group (-SO₂-).A colorless to pale yellow liquid at room temperature, with a characteristic odor.

If you are searching to buy 1,3-Butanesultone with stable quality and competitive pricing, we are a professional 1,3-Butanesultone supplier offering global delivery and technical support.

Spezifikation

Siedepunkt	293°C – 295°C (at 1 atm)
Schmelzpunkt	~-1°C
Dichte	1.260 g/cm³ – 1.270 g/cm³ (at 25°C)
Wasser-Inhalt	≤0.1% (max)
Acidity (as Sulfuric Acid)	≤0.01% (max)
Schwermetalle	≤10 ppm
Residual Solvents	≤0.5%
Other Sultone Isomers	≤0.5%

Applications of 1,3-Butanesultone (CAS 3289-23-4)

1,3-Butanesultone is a highly versatile chemical, primarily valued for its ability to introduce sulfonate groups (-SO₃⁻) into molecules. This functionality enhances water solubility, ionic conductivity, and molecular reactivity, making it a key intermediate in multiple industries.

1. Electrolyte Additive

As a high-performance electrolyte additive, 1,3-Butanesultone plays a critical role in lithium-ion batteries and supercapacitors. It reacts at the electrode interface to form a stable Solid Electrolyte Interphase (SEI) film, which:

Improves battery cycle life and safety
Enhances electrochemical stability and low-temperature performance
Increases ionic conductivity and reduces degradation

This makes 1,3-Butanesultone indispensable for EV batteries, energy storage systems, and advanced power devices.

2. Chemical Intermediate for Surfactants, Polymers, and Water Treatment

1,3-Butanesultone is widely used as a chemical intermediate in synthesizing:

Sulfonate-based surfactants
Ion-exchange resins
Specialty polymers and functional monomers

By introducing sulfonate groups, it improves water solubility, ionic mobility, and dispersibility. These properties make it suitable for detergents, textile auxiliaries, water-treatment chemicals, and advanced polymer applications.

3. Pharmaceutical and Agrochemical Synthesis

In pharmaceutical and agrochemical development, 1,3-Butanesultone is employed to modify active molecules, enhancing:

Bioavailability of drugs and agrochemicals
Target specificity for active compounds
Stability and formulation performance

Its sulfonate functionality enables the creation of specialty drug intermediates, high-efficiency agrochemicals, and functional excipients.

1,3-Butanesultone_CAS_3289-23-4_Application

Key Features of 1,3-Butanesultone (CAS 3289-23-4)

1. Essential for High-Performance Batteries

1,3-Butanesultone is a premium electrolyte additive for lithium-ion batteries and supercapacitors. It forms a dense and stable Solid Electrolyte Interphase (SEI) film on the anode surface, which:

Prevents electrolyte decomposition
Suppresses lithium dendrite growth
Extends battery cycle life by 30–50% in some cases
Enhances overall battery safety and efficiency

This makes it a critical additive for EV batteries, energy storage systems, and advanced power devices.

2. Highly Efficient Sulfonation with Minimal Waste

Unlike linear sulfonating agents such as methanesulfonic acid, the cyclic structure of 1,3-Butanesultone enables precise one-to-one stoichiometric sulfonation. Benefits include:

Reduced excess reactant usage
Lower production costs
Minimized environmental waste
Consistent product quality for downstream chemical synthesis

This property makes 1,3-Butanesultone an eco-friendly and cost-effective chemical intermediate.

3. Enhances End-Product Performance

The sulfonate groups introduced by 1,3-Butanesultone directly improve the performance of downstream products:

In surfactants, they boost water solubility, emulsification, and cleaning efficiency
In ion-exchange resins, they increase ion-capturing capacity for water treatment
In polymers and specialty chemicals, they enhance hydrophilicity and ionic conductivity

This ensures higher-quality, more functional end products for industrial and consumer applications.