Tributylmethylammonium Bis(trifluoromethylsulfonyl)imide (N4441-TFSI), a compound with CAS number 405514-94-5, is recognized not just for its name, but for its meticulously defined properties that make it invaluable across a range of demanding applications. A thorough understanding of these characteristics is essential for leveraging its full potential in research and industrial settings.

At a glance, N4441-TFSI presents as a colorless to yellow liquid. This visual characteristic is important, but it's the underlying chemical and physical properties that truly define its utility. Boasting a high purity, typically assayed at 99% or higher, it ensures minimal interference from impurities in sensitive applications like advanced battery electrolytes or precision chemical synthesis. This high purity is often accompanied by very low water content, which is critical for maintaining electrochemical performance and stability.

The density of N4441-TFSI is approximately 1.27 g/mL. This value is significant for mass-balance calculations in process design and for understanding its behavior in mixtures and solutions. Its refractive index, measured between 1.4260 and 1.4300, provides another key physical parameter useful for quality control and identification. These specific physical markers are important for ensuring product consistency and adherence to specifications.

Perhaps most crucially for many of its applications, N4441-TFSI exhibits excellent thermal stability and very low volatility. This means it can withstand elevated temperatures without significant degradation or evaporation, a critical factor for processes operating under harsh conditions or requiring long-term stability. This property makes it a preferred choice over traditional solvents that readily vaporize, contributing to both safety and efficiency. The combination of high purity, stability, and specific physical parameters makes Tributylmethylammonium Bis(trifluoromethylsulfonyl)imide a cornerstone material in fields ranging from advanced energy storage to specialized chemical manufacturing.