Potassium Hydroxide → Potassium Lauryl Phosphate
Reaction equation
[P:1]([O-:17])([O-:16])([O:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH3:15])=[O:2].[OH-].[K+:19].[K].[P]>>[P:1]([O-:16])([O-:17])([O:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH3:15])=[O:2].[K+:19].[K+:19]Participants
Conditions
- Temperature
- 75 °C
Procedure
A laboratory batch of dodecyl phosphate was prepared by a process similar to Example 1, with a first acid value of 209.6 mg KOH/g sample and weight composition of 6.4% phosphoric acid, 72.3% mono(dodecyl) phosphate, 13.0% di(dodecyl) phosphate, 7.7% nonionics and 0.6% water. The equipment described in Example 4 was charged with 200.9g deionized water and 118.3g of the melted, acid dodecyl phosphate was poured into the stirred liquid to give a white, creamy, easily stirred composition. To this 35° C. lotion was added 59.9g potassium hydroxide solution (44.5 wt. %) to produce a 36% salt composition at 47° C. with a theoretical potassium/phosphorus molar ratio of 0.84. An additional l50.1g of the acid dodecyl phosphate was blended in followed by 66.4g of the 44.5% potassium hydroxide solution. The temperature reached a maximum of 52° within minutes, then began to drop. The creamy, easily stirred, uniform lotion was heated to 75° C. to try to melt it, but when no significant change was observed, it was allowed to cool to room temperature producing a stable, foamy, easily stirred, whipped cream like substance which was not further characterized. The calculated solids for the salt composition was 51% and potassium/phosphorus molar ratio was 0.78.
Workup
- customa maximum of 52°
- temperatureto cool to room temperature
- customproducing a stable, foamy,
- stirringeasily stirred
Sources & evidence
- ORD record
- ord-65da0cda4db44ee0932a519f0e223873
- Source dataset
- uspto-grants-2001_07
- Patent number
- US06262130B1
Reaction notes
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