[EMIM][PF6] (1-Ethyl-3-methylimidazolium hexafluorophosphate, >99.9%) Ionic Liquid as Battery Electrolyte Solvent, 25-100 g/bottle, CBESEMIMPF6

[EMIM][PF6] (1-Ethyl-3-methylimidazolium hexafluorophosphate) is a classic, widely studied room-temperature ionic liquid (RTIL) featuring an aromatic imidazolium cation paired with a phosphorus-based hexafluorophosphate anion. While historically foundational in early ionic liquid research due to its relatively low viscosity and ease of handling compared to other RTILs, its application as a primary battery electrolyte solvent comes with notable constraints, particularly regarding chemical stability and moisture sensitivity.

The key physicochemical characteristics of EMIMPF6 are: (1) Low Initial Viscosity & Good Conductivity: Because of the smaller size and planar structure of the 1-ethyl-3-methylimidazolium cation coupled with the symmetrical PF6- anion, EMIMPF6 exhibits relatively low viscosity and high ionic conductivity at room temperature compared to bulkier pyrrolidinium or piperidinium-based ionic liquids. (2) Non-Volatility & Thermal Stability: Like other ionic liquids, it is non-flammable, possesses negligible vapor pressure under normal operating conditions, and provides high thermal stability, eliminating fire hazards associated with conventional volatile organic carbonate solvents.

Part Number	CBESEMIMPF6 (C-BES-EMIMPF6)
CAS	155371-19-0
Chemical Formula	C6H11F6N2P
Appearance	Colorless liquid
Purity	>99.9% (Battery Grade)
Molecular Weight	256.13 g/mol
Density	1.48 g/cm3
Package Size	25 g, 50 g, and 100 g/bottle

Notes: Please try to store the EMIMPF6 liquid in a dry place (dryroom or glovebox is preferred). 

References: 

1. X. Shi, et al. (EMIm)+(PF6)− Ionic Liquid Unlocks Optimum Energy/Power Density for Architecture of Nanocarbon-Based Dual-Ion Battery, Adv. Energy Mater., 2016, 6, 1601378.
2. N. Li, et al. [EMIM]PF6 additive enabling robust ZnF2-rich SEI for alkaline zinc-based batteries, Chinese Chemical Letters, 2025, DOI: 10.1016/j.cclet.2025.111879.