4-(3-Butyl-1-imidazolio)-1-butanesulfonate
4-(3-Butyl-1-imidazolio)-1-butanesulfonate (CAS 439937-61-8) is an ionic liquid with the molecular formula C11H20N2O3S and a molecular weight of 260.35 g/mol. This compound serves as a versatile reagent in chemical synthesis. Its unique properties make it suitable for various applications within organic chemistry and materials science, contributing to the development of novel synthetic methodologies and advanced materials.

Ionic Liquid Solvent
Utilised as a reaction medium for organic transformations, offering potential advantages in selectivity and yield compared to conventional solvents. Its ionic nature can influence reaction kinetics and thermodynamics.
Catalysis
Can act as a catalyst or co-catalyst in various chemical reactions, leveraging the properties of the imidazolium cation and the sulfonate anion. It may facilitate reactions where enhanced acidity or specific solvation is required.
Material Science Precursor
Employed in the synthesis of polymers and functional materials, where its structure can be incorporated to impart specific properties. It can be a building block for novel ionic liquid-based materials.
Electrochemical Applications
Investigated for use in electrochemical devices, such as batteries or supercapacitors, due to its ionic conductivity and electrochemical stability. The ionic liquid structure can facilitate ion transport.
| Molecular weight | 260.35 |
|---|---|
| Empirical formula | C11H20N2O3S |
| Assay | ≥98.0% (N) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
| Anion traces | bromide (Br-): ≤10 mg/kgchloride (Cl-): ≤10 mg/kgfluoride (F-): ≤10 mg/kgnitrate (NO3-): ≤10 mg/kgphosphate (PO43-): ≤10 mg/kgsulfate (SO42-): ≤10 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-(3-Butyl-1-imidazolio)-1-butanesulfonate used for?
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4-(3-Butyl-1-imidazolio)-1-butanesulfonate is primarily used as a reagent in chemical synthesis, particularly as an ionic liquid solvent or in catalytic applications for various organic transformations and material science research.
What are the CAS number and molecular formula for this compound?
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The CAS number is 439937-61-8 and the molecular formula is C11H20N2O3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of ≥98.0% (N). We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should 4-(3-Butyl-1-imidazolio)-1-butanesulfonate be handled safely?
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This compound is classified as a Warning, with hazards including skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Handle in a well-ventilated area and avoid breathing dust.
Is this chemical regulated or controlled?
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The provided safety data does not indicate that this chemical is a controlled substance.
How is this chemical shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, pharmaceutical intermediates, and laboratory reagents, adhering to all necessary regulations for safe international shipment.
How can I request a sample or quote?
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Please contact our sales team via the website or direct inquiry to request a sample or obtain a quotation for 4-(3-Butyl-1-imidazolio)-1-butanesulfonate.
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