Water → Sodium Behenate

Participants

Reaction Conditions

Reaction Steps

87.6 kg of behenic acid (Edenor C22-85R, trade name, manufactured by Henkel Co.), 423 L of distilled water, 49.2 L of a 5 N aqueous solution of NaOH, and 120 L of tert-butanol were mixed and reacted with stirring at 75° C. for one hour to obtain a solution of sodium behenate. Separately, 206.2 L of an aqueous solution containing 40.4 kg of silver nitrate (pH 4.0) was prepared and kept at 10° C. A surfactant solution prepared by adding Surfactant SI at a concentration of 45 mM/L to 635 L of distilled water and 30 L of tert-butanol and contained in a reaction vessel kept at 30° C. was added with the whole amount of the aforementioned sodium behenate solution, and with the whole amount of the aqueous silver nitrate solution at constant flow rates over the periods of 62 minutes and 10 seconds, and 60 minutes, respectively. In this procedure, the solutions were added in such a manner that only the aqueous silver nitrate solution was added for 7 minutes and 20 seconds after starting the addition of the aqueous silver nitrate solution. Then, the addition of the sodium behenate solution was started so that for 9 minutes and 30 seconds after finish of the addition of the aqueous silver nitrate solution, only the sodium behenate solution was added. In this operation, the outside temperature was controlled to adjust the temperature in the reaction vessel to 30° C. and keep the liquid temperature constant.

Provenance & Evidence