Palmitic Acid → Sodium palmitate

Participants

Reaction Steps

In the preparation of Types I & II silver palmitate, solution A was first prepared by adding 0.15 moles of solid sodium hydroxide to a dispersion of 0.1575 moles and 0.176 moles of palmitic acid respectively in 1L of deionized water at 68° C. thereby producing a solution of sodium palmitate with a pH of ca. 9. Solution B, 250 mL of 0.6M aqueous silver nitrate acidified 4 g of 65% nitric acid at a temperature of 58° C., was then added with vigorous stirring to solution A in 15 s while maintaining a temperature of 68° C. After 1 minute the resulting suspension of silver palmitate was cooled to room temperature and had a pH of ca. 5 and a UAg of ca. 350 mV. The silver palmitate was filtered off under reduced pressure, washed twice each time with about 5L of deionized water and dried in a forced air drying cupboard at 40° C.

Provenance & Evidence