Tributylmethylphosphonium methyl sulfate
Tributylmethylphosphonium methyl sulfate (CAS 69056-62-8) is a quaternary phosphonium salt, often categorised as an ionic liquid. With a molecular weight of 328.45 g/mol, this compound serves as a versatile reagent in chemical synthesis. Its properties make it suitable for various specialised applications within organic and materials chemistry research and development. Tech Serve Solutions supplies this chemical with a minimum purity of 95.0%.
- IUPAC
- Methyltributylphosphonium methyl sulfate

Ionic Liquid Applications
As an ionic liquid, it can be employed as a reaction medium or catalyst in various organic transformations. Its unique solvent properties can influence reaction rates and selectivities.
Chemical Synthesis Reagent
This phosphonium salt can be utilised as a precursor or reagent in the synthesis of more complex molecules. Its functional groups offer pathways for diverse chemical modifications.
Specialty Synthesis
Used in niche areas of chemical synthesis, it contributes to the development of novel materials or compounds requiring specific phosphonium-based chemistry.
| Molecular weight | 328.45 |
|---|---|
| Linear formula | (CH3CH2CH2CH2)3P(CH3)(CH3OSO3) |
| Assay | ≥95.0% |
| Density | 1.027 g/mL at 20 °C(lit.) |




Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H317May cause an allergic skin reaction
- H341Suspected of causing genetic defects
- H350May cause cancer
- H400Very toxic to aquatic life
Precautionary statements
- P201Obtain special instructions before use
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 45-23-34-43-50/53-68 |
| Safety statements (S) | 53-26-36/37/39-45-61 |
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 Tributylmethylphosphonium methyl sulfate used for?
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Tributylmethylphosphonium methyl sulfate (CAS 69056-62-8) is primarily used as a reagent in chemical synthesis and as an ionic liquid in various applications.
What are the CAS number and formula for Tributylmethylphosphonium methyl sulfate?
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The CAS number is 69056-62-8 and the linear formula is (CH3CH2CH2CH2)3P(CH3)(CH3OSO3).
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tributylmethylphosphonium methyl sulfate with a minimum assay of 95.0%. We do not represent this product as USP, BP, EP or other pharmacopoeial grades.
How should Tributylmethylphosphonium methyl sulfate be handled safely?
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This compound is classified as dangerous (Danger). It causes severe skin burns and eye damage (H314) and is harmful if swallowed or inhaled (H302 + H332). It may also cause an allergic skin reaction (H317), and is suspected of causing genetic defects (H341) and cancer (H350). It is also very toxic to aquatic life with long-lasting effects (H400). Appropriate personal protective equipment, including gloves, eye protection, and respiratory protection, must be used. Consult the Safety Data Sheet (SDS) for full handling information.
Is Tributylmethylphosphonium methyl sulfate a controlled substance?
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The provided safety data does not indicate that Tributylmethylphosphonium methyl sulfate is a controlled substance.
How is Tributylmethylphosphonium methyl sulfate shipped and exported?
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Tributylmethylphosphonium methyl sulfate is shipped under UN 3261, Class 8, Packing Group 3. Tech Serve Solutions is experienced in exporting chemicals globally, adhering to all relevant shipping and customs regulations.
How can I request a sample or quote?
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To request a sample or a quote for Tributylmethylphosphonium methyl sulfate, please contact our sales team through the website or by phone, providing your specific requirements and delivery details.
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