Water → Sodium Behenate
Reaction equation
[C:1]([OH:24])(=[O:23])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH3:22].O.[OH-].[Na+:27]>C(O)(C)(C)C>[C:1]([O-:24])(=[O:23])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH3:22].[Na+:27]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 75 °C
Procedure
88 kg of the recrystallized behenic acid, 422 liters of distilled water, 49.2 liters of aqueous NaOH solution (5 mol/liter) and 120 liters of t-butyl alcohol were mixed and reacted with stirring at 75° C. for 1 hour to obtain sodium behenate solution B. Separately, 206.2 liters of aqueous solution of 40.0 kg of silver nitrate (pH 4.0) was prepared, and kept at 10° C. 635 liters of distilled water and 30 liters of t-butyl alcohol were put into a reactor and kept at 30° C. With well stirring, all the sodium behenate solution and all the aqueous silver nitrate solution mentioned above were added to it at a constant rate, taking 93 minutes and 15 seconds, and 90 minutes, respectively. The addition mode was so controlled that only the aqueous silver nitrate solution could be added for the first 11 minutes just after the start of its addition, and then adding the sodium behenate solution was started. After the end of the addition of the aqueous silver nitrate solution, only the sodium behenate solution was added for 14 minutes and 15 seconds. In this step, the temperature in the reactor was kept at 30° C., for which the external temperature around the reactor was so controlled that the liquid temperature in the reactor could be kept constant. The pipe line for the sodium behenate solution was kept warmed by circulating hot water through the interspace of the double-walled pipe, and the liquid temperature at the outlet of the addition nozzle was kept at 75° C. The pipe line for the aqueous silver nitrate solution was thermally insulated by circulating cold water through the interspace of the double-walled pipe. Regarding the position at which the sodium behenate solution is added to the reaction system and that at which the aqueous silver nitrate solution is added thereto, the two were disposed symmetrically to each other relative to the shaft of the stirrer disposed in the reactor, were spaced from the reaction liquid in the reactor.
Workup
- customreacted
Sources & evidence
- ORD record
- ord-367e7a2341524a9ba189d640302143ca
- Source dataset
- uspto-grants-2007_08
- Patent number
- US07253826B2
Reaction notes
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