1-Butyl-3-methylimidazolium methanesulfonate
1-Butyl-3-methylimidazolium methanesulfonate (CAS: 342789-81-5, Formula: C9H18N2O3S) is an ionic liquid with a molecular weight of 234.32 g/mol. Supplied by Tech Serve Solutions for energy applications, this compound finds utility in advanced material science. Its applications span capacitor technology, sensor development, optical devices, and the formulation of magnetic fluids, highlighting its versatility in specialised scientific and industrial contexts.
- IUPAC
- 1-Butyl-3-methyl-1H-imidazolium methanesulfonate

Capacitor Technology
This ionic liquid serves as an electrolyte component in advanced capacitor technologies, contributing to improved performance and energy storage capabilities.
Sensor Development
It is utilised in the development of sophisticated sensors, leveraging its unique electrochemical properties for sensitive detection applications.
Optical Devices
The compound's characteristics make it suitable for integration into optical devices, where its properties can influence light manipulation or device function.
Magnetic Fluids
1-Butyl-3-methylimidazolium methanesulfonate is employed in the formulation of magnetic fluids, impacting their rheological and magnetic responses.
| Molecular weight | 234.32 |
|---|---|
| Empirical formula | C9H18N2O3S |
| Grade | for energy applications |
| Application | Capacitor technology, sensors, optical devices, magnetic fluids1,2 |
| Melting point | 75-80 °C(lit.) |


Hazard statements
- H301Toxic if swallowed
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Flash point | 119 °C / 246.2 °F |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-34-52/53 |
| Safety statements (S) | 26-36/37/39-45-61 |
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 1-Butyl-3-methylimidazolium methanesulfonate used for?
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1-Butyl-3-methylimidazolium methanesulfonate is used in capacitor technology, sensors, optical devices, and magnetic fluids, particularly for energy applications.
What are the CAS number and formula for 1-Butyl-3-methylimidazolium methanesulfonate?
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The CAS number is 342789-81-5 and the empirical formula is C9H18N2O3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Butyl-3-methylimidazolium methanesulfonate for energy applications. The specific purity and assay details are available upon request or via the product's Certificate of Analysis.
How should 1-Butyl-3-methylimidazolium methanesulfonate be handled safely?
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This compound is classified as dangerous and causes severe skin burns and eye damage (H314) and is toxic if swallowed (H301). Handle with appropriate personal protective equipment, including gloves, eye protection, and protective clothing, in a well-ventilated area. Consult the Safety Data Sheet for detailed handling procedures.
Is 1-Butyl-3-methylimidazolium methanesulfonate shipped internationally?
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Yes, Tech Serve Solutions is a global supplier and exporter, capable of shipping this chemical internationally. Please contact us for export and shipping details.
How can I request a quote or sample?
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To request a quote or sample of 1-Butyl-3-methylimidazolium methanesulfonate, please use the contact form on our website or call our sales department, providing your specific requirements.
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