1,2,4-Trimethylpyrazolium methylsulfate
1,2,4-Trimethylpyrazolium methylsulfate (CAS: 856614-13-6), with the molecular formula C7H14N2O4S and a molecular weight of 222.26 g/mol, is an ionic liquid. It serves as a versatile building block in chemical synthesis, particularly within the realm of specialty chemicals and pyrazolium derivatives. Its properties make it suitable for advanced research and development applications requiring precise chemical manipulation.
- IUPAC
- Basionics® ST 33,MMMPz MeOSO3
- Synonyms
- 856614-13-6C7H14N2O4SBasionics® ST 33MMMPz MeOSO3

Chemical Synthesis
Utilised as a reagent or intermediate in the synthesis of complex organic molecules. Its ionic liquid nature can offer unique reaction environments and improved solubility for certain substrates.
Ionic Liquid Applications
Serves as a component in the formulation of ionic liquids for various industrial and research purposes. These can include applications in catalysis, electrochemistry, and separation processes.
Specialty Chemical Development
Employed in the development of novel specialty chemicals where its specific structural and chemical properties are advantageous. Suitable for niche synthetic pathways.
Pyrazolium Chemistry
A key compound for researchers exploring pyrazolium-based structures and their functionalities. Useful in academic and industrial research laboratories.
| Molecular weight | 222.26 |
|---|---|
| Empirical formula | C7H14N2O4S |
| Assay | ≥95% |
| Impurities tested | ≤1% water |
| Protective equipment | Eyeshields, Gloves |
|---|---|
| Flash point | 142 °C / 287.6 °F |
| Water hazard class (WGK, DE) | 3 |
| Anion traces | chloride (Cl-): ≤50 mg/kg |
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 1,2,4-Trimethylpyrazolium methylsulfate used for?
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1,2,4-Trimethylpyrazolium methylsulfate is primarily used in chemical synthesis, particularly for specialty chemicals and in the field of ionic liquids and pyrazolium derivatives.
What is the CAS number and formula for 1,2,4-Trimethylpyrazolium methylsulfate?
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The CAS number is 856614-13-6, and the empirical formula (Hill notation) is C7H14N2O4S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,2,4-Trimethylpyrazolium methylsulfate with an assay of ≥95% and contains ≤1% water. We do not represent this product as USP, BP, EP, or pharmaceutical grade.
How should 1,2,4-Trimethylpyrazolium methylsulfate be handled?
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Appropriate personal protective equipment, including eyeshields and gloves, should be used when handling. It has a flash point of 142 °C (287.6 °F). Consult the Safety Data Sheet for full handling and hazard information.
How is 1,2,4-Trimethylpyrazolium methylsulfate packed and shipped?
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This chemical is carefully packed according to international shipping regulations for hazardous materials and is available for export worldwide by Tech Serve Solutions.
How can I request a sample or quote for 1,2,4-Trimethylpyrazolium methylsulfate?
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To request a sample or a quote, please use the contact form on our website or email our sales department, providing your details and the product CAS number 856614-13-6.
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