1-Ethyl-3-methylimidazolium octanoate, CAS: 1154003-55-0

Key Applications:

Biomass Processing and Cellulose Solvation

• Effective cellulose solvent due to the combined hydrogen‑bond‑disrupting capability of the imidazolium cation and the moderately hydrophobic octanoate anion.
• Supports dissolution, swelling, and regeneration of cellulose, enabling film formation, fiber spinning, and derivatization workflows.
• Useful in lignocellulosic pretreatment, selectively solubilizing lignin and hemicellulose to improve downstream enzymatic hydrolysis.

Catalysis and Reaction Media

• Provides a medium‑polarity ionic environment suitable for base‑catalyzed, organometallic, and condensation reactions.
• Enhances phase‑transfer behavior in biphasic systems due to the amphiphilic nature of the octanoate anion.
• Stabilizes reactive intermediates in esterification, transesterification, and related transformations.

Surfactant, Emulsion, and Formulation Science

• Exhibits intrinsic amphiphilicity, enabling formation of microemulsions and stabilization of dispersions.
• Functions as a co‑solvent or co‑surfactant in formulations requiring tunable polarity and low volatility.
• Improves nanoparticle dispersion for metal oxides, carbon nanomaterials, and hybrid composites.

Electrochemical and Energy Applications

• Offers moderate hydrophobicity with useful ionic conductivity for low‑voltage electrochemical systems.
• Serves as an ion‑transport medium in polymer electrolytes, gels, and flexible electronic materials.
• Suitable for bioelectrochemical devices where carboxylate anions provide lower cytotoxicity than halides.

Biocompatible and Bio‑derived Systems

• Carboxylate anions such as octanoate are generally less cytotoxic, enabling use in enzyme stabilization, protein extraction, and selective microbial phase systems.
• Supports bioprocessing environments where ionic liquids enhance solubility without denaturing biomolecules.

Polymer and Materials Processing

• Acts as a plasticizer or processing aid for biopolymers including cellulose, chitosan, and PLA blends.
• Enables formation of ionically conductive polymer films for sensors and soft electronics.
• Useful in surface modification workflows where hydrophobic chain length improves adsorption and interfacial behavior.

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