Trimethylsulfonium tetrafluoroborate
Trimethylsulfonium tetrafluoroborate (CAS: 676-88-0; C3H9BF4S) is a stable, crystalline organic salt with a molecular weight of 163.97 g/mol. It serves as a valuable building block in organic synthesis, particularly in the formation of sulfur-containing compounds. Its utility extends to chemical research and development, where it is employed in various synthetic transformations. Tech Serve Solutions supplies this compound with a high assay, meeting the stringent demands of laboratory and industrial applications.

Organic Synthesis Reagent
Trimethylsulfonium tetrafluoroborate functions as a methylating agent or a precursor in the synthesis of diverse organic molecules. Its tetrafluoroborate counterion contributes to its stability and solubility characteristics in common organic solvents.
Chemical Research and Development
This compound is utilised in academic and industrial research settings for exploring novel reaction pathways and developing new chemical entities. Its specific reactivity profile makes it a useful tool for synthetic chemists.
Building Block for Specialty Chemicals
As an organic building block, it can be incorporated into more complex molecular structures for the creation of specialty chemicals. Its sulfur and tetrafluoroborate moieties offer unique synthetic handles.
| Molecular weight | 163.97 |
|---|---|
| Empirical formula | C3H9BF4S |
| Assay | 97% |
| Melting point | 205-210 °C |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Transport (UN / ADR) | UN 3261 8 / PGII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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 Trimethylsulfonium tetrafluoroborate used for?
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Trimethylsulfonium tetrafluoroborate is used as a building block in organic synthesis, for chemical synthesis, and in organic building block applications. It is particularly useful in the synthesis of sulfur compounds and as a methylating agent.
What is the CAS number and formula for Trimethylsulfonium tetrafluoroborate?
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The CAS number for Trimethylsulfonium tetrafluoroborate is 676-88-0 and its empirical formula (Hill notation) is C3H9BF4S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trimethylsulfonium tetrafluoroborate with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
What are the main hazards associated with Trimethylsulfonium tetrafluoroborate?
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Trimethylsulfonium tetrafluoroborate is classified as Danger, indicated by GHS05. It causes severe skin burns and eye damage (H314). Appropriate personal protective equipment, including gloves, eye protection, and protective clothing, must be worn when handling this corrosive substance.
How is Trimethylsulfonium tetrafluoroborate packed and shipped?
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Trimethylsulfonium tetrafluoroborate is shipped as UN 3261, Class 8, Packing Group II, indicating it is a corrosive solid. It is carefully packed to comply with international shipping regulations for hazardous materials.
How can I request a sample or quote for Trimethylsulfonium tetrafluoroborate?
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To request a sample or obtain a quote for Trimethylsulfonium tetrafluoroborate, please contact the Tech Serve Solutions sales team through our website or by phone. Please specify the quantity and your delivery location.
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