Potassium Hydroxide → Phosphoric acid, monooctadecyl ester, zinc salt (1:1)
Reaction equation
[P:1]([O-:23])([O-:22])([O: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][CH3:21])=[O:2].[OH-].[K+].S([O-])([O-])(=O)=O.[Zn+2:31]>O>[P:1]([O-:22])([O-:23])([O: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][CH3:21])=[O:2].[Zn+2:31]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 90 °C
Procedure
Water (88 L) was added to stearyl phosphate (molar ratio of diester/monoester=1/2.7; acid value, 232 mg KOH/g) (5 kg) while heating at 90° C., whereby the stearyl phosphate was dispersed uniformly. An aqueous solution of potassium hydroxide (300 g/L) (3862 ml) was dropwise added to the mixture while keeping the said temperature. When the addition was finished, the mixture showed a pH of about 11. The saponified dispersion was divided in five equal parts, and an aqueous solution of zinc sulfate (300 g/L) (1591 ml) was added to each part at 50°, 60°, 70°, 80° or 90° C. and the mixture was further stirred for 90 minutes. The product was collected, washed with water, filtered, dried at 75° C. for 72 hours and pulverized by the aid of a water-cooling type hammer mill to give zinc stearyl phosphate. The results are shown in Table 1.
Workup
- additionWhen the addition
- customThe product was collected
- washwashed with water
- filtrationfiltered
- customdried at 75° C. for 72 hours
- temperaturecooling type hammer mill
Sources & evidence
- ORD record
- ord-72ccf124566541a194fd5a0814ec8dcb
- Source dataset
- uspto-grants-1979_07
- Patent number
- US04163018
Reaction notes
Loading…