1-Ethyl-2-methylpyridinium bromide, CAS: 32353-50-7

Key Applications:

Catalysis & Organic Synthesis

• Functions as a phase‑transfer catalyst in nucleophilic substitution, alkylation, and condensation reactions.
• Enhances reaction rates in solvent‑free and biphasic systems due to efficient ion shuttling.
• Serves as a stabilizing ionic medium for transition‑metal‑catalyzed transformations.

Solvent, Co‑Solvent & Reaction Medium

• Provides a high‑polarity, non‑volatile medium for difficult transformations requiring strong ionic environments.
• Useful for microwave‑assisted synthesis, enabling improved yields and reduced reaction times.
• Supports dissolution of polar organics, halides, and metal salts.

Electrochemical Applications

• Acts as an ionic additive to improve conductivity and ion mobility in electrochemical cells.
• Suitable for electrodeposition studies and redox‑active systems requiring stable pyridinium cations.
• Can be incorporated into protic or aprotic ionic‑liquid blends to tune viscosity and conductivity.

Zinc–Bromine Battery Electrolytes

• • Serves as a bromide‑rich supporting electrolyte that stabilizes bromine species during charge–discharge cycling.
  • Enhances ionic conductivity and improves zinc plating/stripping efficiency through strong ion‑pair interactions.
  • Helps suppress dendrite formation by promoting uniform zinc deposition at the electrode surface.
  • Supports higher coulombic efficiency and extended cycle life when incorporated into hybrid ionic‑liquid electrolyte formulations.
  • Useful in electrolyte optimization studies aimed at reducing volatility, improving thermal stability, and tuning viscosity for flow‑battery architectures.

Materials Science & Polymer Processing

• Used as a structure‑directing agent in polymer templating and nanomaterial synthesis.
• Enhances dispersion of charged species in polymer matrices and composite materials.
• Supports formation of ion‑conductive films and membranes.

Extraction & Separation Processes

• Facilitates selective extraction of metal ions and organic solutes through tunable ion‑pair interactions.
• Useful in biphasic separation systems where high polarity and low volatility are advantageous.

Analytical Chemistry

• Employed as an electrolyte component in chromatography and electrophoresis.
• Stabilizes analytes and improves peak resolution in ionic‑strength‑dependent methods.

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