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).
Files with the .paf extension are most commonly associated with portable USB flash drives. The PAF files contain installers for portable applications that can be stored on the USB flash drive.These files allow the applications to be run from the flash drive on any Windows-based computer, rather than the computer's hard drive.FireFox Portable, 7-Zip Portable and OpenOffice Portable all use the PAF file format, as do a variety of other portable applications.rogram has been verified to work with PAF files. Every day, thousands of users submit information to us about which programs they use to open certain types of files.