Trimethylphosphonium tetrafluoroborate
Trimethylphosphonium tetrafluoroborate (CAS: 154358-50-6, Formula: C3H10BF4P) is a phosphonium salt with a molecular weight of 163.89 g/mol. This compound serves as a valuable reagent in chemical synthesis, particularly within catalysis and inorganic chemistry. Its structure makes it useful as a phosphine ligand precursor. Tech Serve Solutions offers this chemical with a minimum assay of 98%.

Phosphine Ligand Precursor
Trimethylphosphonium tetrafluoroborate can function as a precursor for generating trimethylphosphine ligands, which are widely employed in transition metal catalysis. These ligands are critical for controlling reactivity and selectivity in various catalytic processes.
Catalysis
This compound finds application in diverse catalytic reactions, leveraging its unique chemical properties. It is particularly relevant in areas of inorganic chemistry and organic synthesis where phosphonium salts play a role.
Chemical Synthesis Reagent
As a versatile reagent, Trimethylphosphonium tetrafluoroborate is utilised in various synthetic pathways. Its incorporation into reaction schemes can facilitate specific transformations and the creation of complex molecules.
| Molecular weight | 163.89 |
|---|---|
| Empirical formula | C3H10BF4P |
| Assay | 98% |
| Melting point | 209-212 °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) | 1 |
| 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 Trimethylphosphonium tetrafluoroborate used for?
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Trimethylphosphonium tetrafluoroborate is primarily used as a reagent in chemical synthesis, particularly in catalysis and inorganic chemistry, and as a precursor for phosphine ligands.
What are the CAS number and formula for Trimethylphosphonium tetrafluoroborate?
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The CAS number for Trimethylphosphonium tetrafluoroborate is 154358-50-6, and its empirical formula is C3H10BF4P.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trimethylphosphonium tetrafluoroborate with a minimum assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should Trimethylphosphonium tetrafluoroborate be handled safely?
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Trimethylphosphonium tetrafluoroborate is classified as Danger (GHS05) and causes severe skin burns and eye damage (H314). Handle with appropriate personal protective equipment, including gloves, eye protection, and protective clothing. Ensure adequate ventilation. Refer to the Safety Data Sheet for full handling instructions.
How is Trimethylphosphonium tetrafluoroborate packed and shipped?
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Trimethylphosphonium tetrafluoroborate is packed according to relevant transport regulations (UN 3261, Class 8, PGII) for safe handling and international export. Consult our shipping department for specific details.
How can I request a quote or sample of Trimethylphosphonium tetrafluoroborate?
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To request a quote or sample, please contact our sales team via the website or direct email, providing your contact details and the quantity required.
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