1-Butyl-2,3-dimethylimidazolium tetrafluoroborate CAS 402846-78-0

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1. Description

1-Butyl-2,3-dimethylimidazolium tetrafluoroborate (CAS 402846-78-0) is a stable ionic liquid featuring the robust C2-methylated imidazolium cation, known for enhanced thermal and chemical resistance. Combined with the non-coordinating tetrafluoroborate () anion, it often presents as a room-temperature liquid with lower viscosity compared to halide analogues. Its stability profile makes it suitable for specialized pharmaceutical R&D applications, including demanding synthetic reactions, electrochemical studies, or as an intermediate, particularly where non-aqueous conditions are preferred.

2. Properties Table

Property Value
Chemical Name 1-Butyl-2,3-dimethylimidazolium tetrafluoroborate
Abbreviation BMMIM-BF4; [BMMIM][BF4]
CAS Number 402846-78-0
Molecular Formula
Molecular Weight
Appearance Colorless to pale yellow liquid
Purity
Melting Point < (Approx.)
Stability High cation stability; Anion sensitive to hydrolysis
Density Approx.
Solubility Limited solubility/miscibility in water; Soluble in many organic solvents

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