As our group has previously illustrated, the presence of ammonium sulfate in conjunction with α-pinene oxidation products depresses the surface tension by as much as 4-5% more than when measured in pure water. This trend is replicated to an even greater degree here: relative to pure water, the surface tension of a 0.1 mM solution of the aldol addition dimer 7 in 1.0 M ammonium sulfate is depressed by 8%, compared to a 0.1% decrease at the same concentration in water (see Supporting Information Figure ). This phenomenon can be described by the "salting out" effect, wherein the presence of inorganic species in the bulk lowers the solubility of organic species, driving them to the surface of the droplet to form an organic rich crust. We next turned our attention to investigating the consequences of backbone stereochemistry on surface tension suppression by comparing our suite of dimeric adducts derived from either the same enantiomer of α-pinene or from the opposite enantiomeric forms (Figure ).