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).
SPF: Sender Policy Framework (antispam initiative) SPF: Strategic Prevention Framework (US federal grant program) SPF: Shortest Path First: SPF: Service Public FÃ©dÃ©ral (Belgium) SPF: Specific Pathogen Free: SPF: Sygate Personal Firewall: SPF: Sender Permitted From (email; now Sender Policy Framework) SPF: Secours Populaire FranÃ§ais: SPF: Single Point of Failure: SPF