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 a GIF file? GIF files are image files that can be created by a number of different graphics applications. Files with the .gif file extension can contain up to 256 colors. GIF files are often used in web graphics and are commonly used to create graphic text for websites. While the pixels in a GIF file can be transparent, they must either be fully transparent or fully opaque when creating or editing the image.