1-Butyl-3-methylimidazolium trifluoromethanesulfonate
1-Butyl-3-methylimidazolium trifluoromethanesulfonate (CAS: 174899-66-2, C9H15F3N2O3S) is an ionic liquid with a molecular weight of 288.29 g/mol. This compound functions as a versatile solvent and catalyst in various chemical synthesis applications, including organic reactions and materials science. Its unique properties make it valuable for researchers and industrial chemists seeking efficient and selective reaction media.
- IUPAC
- BMIM Otf,Basionics® VS 12

Chemical Synthesis
Serves as a reaction medium or catalyst in diverse organic transformations. Its ionic nature can influence reaction pathways and selectivities.
Ionic Liquid Applications
Utilised in electrochemical processes, separations, and as a solvent for materials that are insoluble in conventional organic solvents.
Specialty Synthesis
Employed in the development of specialised chemical products where specific solvent properties or catalytic activity are required.
| Molecular weight | 288.29 |
|---|---|
| Empirical formula | C9H15F3N2O3S |
| Assay | ≥98% |
| Density | 1.292 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.434 |
| Impurities tested | ≤0.5% water |

Hazard statements
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | >100 °C / >212 °F |
| Transport (UN / ADR) | UN 2810 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 25-36/38-51/53 |
| Safety statements (S) | 26-45-61 |
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 trifluoromethanesulfonate used for?
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This compound is primarily used in chemical synthesis as a solvent or catalyst, and in various applications involving ionic liquids such as electrochemistry and material science.
What is the CAS number and formula for 1-Butyl-3-methylimidazolium trifluoromethanesulfonate?
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The CAS number is 174899-66-2, and the empirical formula is C9H15F3N2O3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Butyl-3-methylimidazolium trifluoromethanesulfonate with an assay of ≥98%. This product is not represented as USP, BP, or EP grade.
How should 1-Butyl-3-methylimidazolium trifluoromethanesulfonate be handled safely?
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Handle with extreme caution due to its toxic and irritating nature. Wear appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection. Avoid ingestion, skin contact, and eye contact. Refer to the Safety Data Sheet for detailed handling procedures.
Is 1-Butyl-3-methylimidazolium trifluoromethanesulfonate shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 1-Butyl-3-methylimidazolium trifluoromethanesulfonate.
How can I request a sample or quote?
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To request a sample or a quotation, please contact our sales department via the website or by phone, providing the product name and CAS number (174899-66-2).
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