1,3-Diethylimidazolium ethyl sulfate, CAS: 516474-04-7

Key Applications:

Solvent and Processing Applications

• Polar, non‑volatile solvent for organic synthesis, particularly for reactions requiring enhanced solubility of polar substrates.
• Medium for acid‑catalyzed transformations, including esterifications, alkylations, and dehydration reactions where ethyl sulfate anions can support proton transfer.
• Reaction medium for biocatalysis, especially for enzymes tolerant to moderate ionic strength and low vapor pressure environments.
• Solvent for polymer dissolution and modification, including cellulose derivatives, polyacrylates, and select polyamides.

Electrochemical and Energy Applications

• Electrolyte component in low‑volatility electrochemical systems where moderate ionic conductivity and thermal stability are required.
• Additive for redox‑active electrolytes, improving ion mobility and stabilizing electrode interfaces.
• Medium for electrodeposition of metals or alloys under controlled, low‑moisture conditions.

Materials and Surface Science

• Template or structure‑directing agent in the synthesis of inorganic and hybrid materials, including mesoporous oxides and nanostructured silicas.
• Dispersant for nanoparticles, improving colloidal stability of metal, metal oxide, and carbon‑based nanomaterials.
• Processing aid for thin‑film fabrication, enabling uniform deposition due to low vapor pressure and tunable viscosity.

Extraction and Separation

• Selective extraction solvent for metal ions, organic acids, and aromatic compounds in biphasic or supported liquid membrane systems.
• Phase‑behavior modifier in aqueous biphasic systems (ABS), enabling tunable partitioning for biomolecules and fine chemicals.

Catalysis and Green Chemistry

• Catalyst stabilizer for homogeneous and heterogeneous catalytic systems, improving turnover and thermal stability.
• Medium for recyclable catalytic processes, supporting reduced solvent waste and simplified product recovery.
• Protic ionic liquid environment that can enhance reaction rates for acid‑driven transformations.

Analytical and Laboratory Uses

• Solvent for NMR and spectroscopic studies of polar or ionic species.
• Matrix or carrier phase in mass spectrometry sample preparation for thermally sensitive analytes.

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