Description

1,1-Dimethylpyrrolidinium tetrafluoroborate (CAS No. 69444-51-5) is a high-purity ionic liquid with the molecular formula C₆H₁₄BF₄N. This quaternary ammonium salt is characterized by its exceptional thermal stability, low viscosity, and high ionic conductivity, making it an ideal candidate for advanced electrochemical applications. It is synthesized under stringent quality control to ensure minimal impurities, with a typical purity of ≥98% (HPLC). The compound is supplied as a white crystalline powder, soluble in polar organic solvents such as acetonitrile and dimethyl sulfoxide (DMSO). Its IUPAC name is 1,1-dimethylpyrrolidin-1-ium;tetrafluoroborate, and it is widely utilized in lithium-ion battery electrolytes, supercapacitors, and as a catalyst in organic synthesis. Store in a cool, dry place under inert atmosphere to maintain stability.

Properties

• CAS Number: 69444-51-5
• Complexity: 77.7
• IUPAC Name: 1,1-dimethylpyrrolidin-1-ium;tetrafluoroborate
• InChI: InChI=1S/C6H14N.BF4/c1-7(2)5-3-4-6-7;2-1(3,4)5/h3-6H2,1-2H3;/q+1;-1
• InChI Key: QVXREJQVKRNKMK-UHFFFAOYSA-N
• Exact Mass: 187.1155423
• Molecular Formula: C6H14BF4N
• Molecular Weight: 186.99
• SMILES: [B-](F)(F)(F)F.C[N+]1(CCCC1)C
• Monoisotopic Mass: 187.1155423
• Synonyms: 69444-51-5, 1,1-Dimethylpyrrolidinium tetrafluoroborate, 834-341-9, 1,1-Dimethylpyrrolidin-1-ium tetrafluoroborate, SCHEMBL1448477, n,n-dimethylpyrrolidinium tetrafluoroborate

Application

1,1-Dimethylpyrrolidinium tetrafluoroborate is primarily used as an electrolyte additive in lithium-ion batteries to enhance electrochemical performance and cycle life. Its high thermal stability and ionic conductivity also make it suitable for supercapacitors and fuel cell applications. In organic synthesis, it serves as a phase-transfer catalyst for alkylation and polymerization reactions. Researchers value its low volatility and non-flammability for green chemistry initiatives.

Safety and Hazards

GHS Hazard Statements

• H301 (50%): Toxic if swallowed [Danger Acute toxicity, oral]
• H319 (50%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H412 (50%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P264, P264+P265, P270, P273, P280, P301+P316, P305+P351+P338, P321, P330, P337+P317, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (50%)
• Eye Irrit. 2 (50%)
• Aquatic Chronic 3 (50%)

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