Alkylammonium salts Ionic compounds

Synonyms Dimethyl ditallow alkylammonium chlorides Dimethyl ditallow ammonium chioride Ditallow dimethyl ammonium chloride Quaternary ammonium compounds, dimethyiditallow alkyl, chlorides Quaternium48 Classification Quaternary ammonium salt Ionic Nature Cationic... 

In a series of papers published throughout the 1980s, Colin Poole and his co-workers investigated the solvation properties of a wide range of alkylammonium and, to a lesser extent, phosphonium salts. Parameters such as McReynolds phase constants were calculated by using the ionic liquids as stationary phases for gas chromatography and analysis of the retention of a variety of probe compounds. However, these analyses were found to be unsatisfactory and were abandoned in favour of an analysis that used Abraham s solvation parameter model [5]. 

The same kind of reasoning can be carried out for systems containing a fatty amine and a fatty amine salt as a function of pH, such as the ones that have been widely used in asphalt emulsions. At low pH (say pH 3), the amine salt behaves as a quaternary ammonium compound according to the ionic correlation for optimum formulation. However, a quaternary compound such as alkyltrimethylammonium is substantially more hydrophilic than the corresponding alkylammonium at low pH in spite of the three extra... 

---