1-Ethyl-2,3-dimethylimidazolium ethyl sulfate, CAS: 342573-75-5

Key Applications:

Biomass & Biopolymer Processing

• Efficient dissolution and swelling of cellulose, hemicellulose, and lignocellulosic feedstocks for pretreatment and fractionation.
• Medium for carbohydrate derivatization, esterification, and selective depolymerization.
• Solvent for chitin/chitosan modification and homogeneous processing.

Acid‑Catalyzed Organic Transformations

• Reaction medium for Friedel–Crafts, esterification, acylation, and alkylation reactions where ethyl sulfate’s Brønsted acidity enhances catalytic turnover.
• Facilitates heterogeneous–homogeneous hybrid catalysis, improving mass transfer and selectivity.
• Useful in sulfonation and transesterification workflows requiring thermally stable, non‑volatile ionic media.

Electrochemical & Energy Applications

• High‑conductivity electrolyte component for aqueous and mixed‑solvent electrochemical systems.
• Additive in supercapacitor and pseudocapacitor formulations to improve ionic mobility and electrode wetting.
• Medium for electrodeposition of metals and metal oxides under mild conditions.

Surfactants, Formulations & Phase Behavior

• Hydrophilic IL for microemulsion formation, biphasic catalysis, and tunable solvent systems.
• Enhances solubility of polar organics and inorganic salts in green formulation chemistry.
• Compatible with enzyme‑assisted reactions, stabilizing certain biocatalysts in low‑water environments.

Thermal & Process Engineering

• Heat‑transfer and thermal‑storage medium in low‑temperature ranges due to high thermal stability and negligible vapor pressure.
• Solvent for extraction, ion‑exchange, and selective separation of polar compounds.

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