A Phase Study of the System Sodium Palmitate-Sodium Chloride-Water at 90°

Abstract

with the oil pump. Nine and eight-tenths grams of 2,4,6triethylacetophenone came over at 112-114°( 4-5 mm.). The distillation slowed up and was discontinued at this point. After standing overnight at room temperature, the flask contained yellow crystals. These were removed, filtered and washed with a little 85% alcohol. On recrystallization from petroleum ether, 7.75 g. of product was obtained. The yields of diketone and monoketone were 32.5 and 38.4%, respectively.The monoketone was identified by means of a mixed melting point of its benzal derivative with an authentic specimen. The diketone crystallized in golden-yellow prisms melting at 75-75.5 °.

The four known crystalline forms of soap

“…In considering the later information on the known crystalline forms of soap, it is useful to note that when sodium soap is allowed to crystallize freely, a fiber form of crystal is usually obtained. Microscopic as well as macroscopic fibers may be observed (8), and MeBain (5) has shown that the ultramicroscopic units are likewise of fiber character.…”

Gastrointestinal metabolism of a vegetable-oil emulsion in healthy subjects

“…The fatty acid analyses showed a relative enrichment of palmitic acid concentrations in the jejunal samples after the test product treatment compared with the concentrations in the starting products. Palmitic and stearic acids and their sodium or calcium soaps form needle-shaped crystals in an aqueous environment (38). It is possible that the crystals are insoluble soaps of long-chain saturated fatty acids at the jejunal pH, as reported previously (39,40).…”

Soap-Boiling Equilibria for Sodium Stearate. The New Phase, Kettle Wax

“…THE phase rule in its usual form applies, strictly, to equilibria in soap systems (2,9). This has been carefully demonstrated for a number of binary systems containing water with pure and commercial soaps, and for the ternary system sodium palmitate-sodium chloride-water (3, 5,6,11). In general, the data for commercial soaps in the presence of electrolytes and water rather closely conform to the behavior calculable from their constituents (4).…”