Synthesis [edit]. Quaternary ammonium compounds are prepared by the alkylation of tertiary amines with a halocarbon. In older literature this is often called a Menshutkin reaction, however modern chemists usually refer to it simply as quaternization.uaternary ammonium compounds have also been shown to have antimicrobial activity. Certain quaternary ammonium compounds, especially those containing long alkyl chains, are used as antimicrobials and disinfectants.
Answer: XPF files are Uncommon Files primarily associated with XaoS Position File (Jan Hubicka Thomas Marsh Zoltan Kovacs and Others).
What is an ARF file? ARF stands for Advanced Recording File. Files with the .arf extension are most commonly used by the WebEx online meeting software. The ARF files contain recordings of the online meetings conducted with the WebEx application and include meeting video data, a table of contents, attendee list and other meeting information.