1-Methylimidazolium hydrogen sulfate
1-Methylimidazolium hydrogen sulfate (CAS: 681281-87-8), with the formula C4H6N2 · H2SO4 and a molecular weight of 180.18 g/mol, is a Basionic® ionic liquid. This compound serves as a versatile reagent and catalyst in various chemical synthesis applications. It is particularly noted for its utility in phase transfer catalysis and as a specialty synthetic reagent, offering unique solvent properties and reactivity in organic transformations.
- IUPAC
- 1-Methylimidazole hydrogen sulfate,Basionics® AC 39
Ionic Liquid in Chemical Synthesis
1-Methylimidazolium hydrogen sulfate functions as an ionic liquid, providing a unique reaction medium for various organic transformations. Its properties facilitate reactions that may be challenging in conventional solvents.
Phase Transfer Catalyst
As a phase transfer catalyst, this compound can enhance reaction rates and yields by facilitating the transfer of reactants between immiscible phases. This is valuable in synthesising complex molecules.
Specialty Reagent
This imidazolium salt acts as a specialty synthetic reagent, offering specific reactivity profiles for targeted chemical modifications. It is employed in advanced organic synthesis and materials science research.
Acidic Ionic Liquid
The hydrogen sulfate anion imparts acidic properties, making it suitable as an acidic catalyst in reactions such as esterification, alkylation, and condensation reactions where a Brønsted acid is required.
| Molecular weight | 180.18 |
|---|---|
| Empirical formula | C4H6N2 · H2SO4 |
| Assay | ≥94.5% (HPLC)95% |
| Grade | BASF quality95% |
| Impurities tested | ≤1% water |
| Application | Basionic Ionic Liquids |
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
| 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 |
|---|---|
| Flash point | >280 °C / >536 °F |
| 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 |
| Anion traces | chloride (Cl-): ≤20 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-Methylimidazolium hydrogen sulfate used for?
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1-Methylimidazolium hydrogen sulfate is used as a Basionic® ionic liquid, a specialty synthetic reagent, and a phase transfer catalyst in chemical synthesis and various organic transformations.
What are the CAS number and formula for 1-Methylimidazolium hydrogen sulfate?
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The CAS number is 681281-87-8 and the chemical formula is C4H6N2 · H2SO4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Methylimidazolium hydrogen sulfate with a minimum assay of 94.5% (HPLC), commonly labelled as 95% (BASF quality). It contains ≤1% water and is not represented as USP, BP, or EP grade.
What are the main safety concerns when handling 1-Methylimidazolium hydrogen sulfate?
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This compound is classified as dangerous, with signal word 'Danger' and hazard statement H314 (Causes severe skin burns and eye damage). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection (type N100 or P3), must be used.
How is 1-Methylimidazolium hydrogen sulfate packed, shipped, or exported?
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The product is shipped under UN 3261, 8 / PGII classification, indicating it is a corrosive liquid, acidic, organic, n.o.s. Specific packaging and shipping regulations apply.
How can I request a sample or a quote for 1-Methylimidazolium hydrogen sulfate?
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To request a sample or a quote, please contact the Tech Serve Solutions sales team through our website or by phone, referencing the product name and CAS number (681281-87-8).
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