1-Butyl-3-methylimidazolium thiocyanate
1-Butyl-3-methylimidazolium thiocyanate (CAS: 344790-87-0; Formula: C9H15N3S) is an ionic liquid with a molecular weight of 197.30 g/mol. Supplied as a liquid with an assay of ≥95% and 0.7% water content, it is specifically formulated for energy applications. Its unique properties make it valuable in the development of dye-sensitized solar cells, capacitors, and advanced optical devices.
- IUPAC
- 1-Butyl-3-methyl-1H-imidazolium thiocyanate

Energy Storage
Utilised in capacitor technology for its ionic conductivity properties, contributing to the development of high-performance energy storage devices.
Photovoltaics
Employed in dye-sensitized solar cells (DSSCs) as an electrolyte component, enhancing photovoltaic efficiency and stability.
Optical Devices
Its characteristics are leveraged in the design and fabrication of specialised optical devices, indicating potential for advanced photonic applications.
| Molecular weight | 197.30 |
|---|---|
| Empirical formula | C9H15N3S |
| Assay | ≥95% |
| Grade | for energy applications |
| Form | liquid |
| Density | 1.07 g/mL at 25 °C |
| Refractive index | n20/D 1.538 |
| Impurities tested | 0.7% water |
| Application | Dye sensitized solar cell, capacitor technology, optical devices1,2 |

Hazard statements
- H302Harmful if swallowed
- H412Harmful to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
| Flash point | 206 °C / 402.8 °F |
|---|---|
| Transport (UN / ADR) | UN 2810 6.1/PG 3 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-32-52/53 |
| Safety statements (S) | 13-36/37-46-61 |
| Supplemental hazards | Contact with acids liberates very toxic gas. |
| Anion traces | chloride (Cl-): 0.24% |
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 thiocyanate used for?
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1-Butyl-3-methylimidazolium thiocyanate is primarily used in energy applications, including dye-sensitized solar cells, capacitor technology, and optical devices.
What is the CAS number and formula for 1-Butyl-3-methylimidazolium thiocyanate?
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The CAS number is 344790-87-0 and the empirical formula is C9H15N3S.
What grade and purity does Tech Serve Solutions supply for 1-Butyl-3-methylimidazolium thiocyanate?
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Tech Serve Solutions supplies 1-Butyl-3-methylimidazolium thiocyanate with an assay of ≥95% and a grade specified for energy applications. It contains approximately 0.7% water.
What are the safety considerations when handling 1-Butyl-3-methylimidazolium thiocyanate?
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This compound is classified as harmful if swallowed, in contact with skin, or if inhaled (H302 + H312 + H332) and is harmful to aquatic life with long lasting effects (H412). Contact with acids liberates very toxic gas. Always handle with appropriate personal protective equipment in a well-ventilated area.
How is 1-Butyl-3-methylimidazolium thiocyanate packed and shipped?
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As a global supplier and exporter, Tech Serve Solutions ensures that 1-Butyl-3-methylimidazolium thiocyanate is packed and shipped in compliance with all relevant regulations for hazardous materials, including UN 2810, Class 6.1, Packing Group 3.
How can I request a sample or quote for 1-Butyl-3-methylimidazolium thiocyanate?
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Please use the 'Request a Quote' or 'Sample Request' function on our website, or contact our sales team directly with your specific requirements for 1-Butyl-3-methylimidazolium thiocyanate.
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