Sodium Hydroxide → Calcium stearyl phosphate

HRID 972046

Reaction equation

HRID 972046 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-].[Na+].[N+]([O-])([O-])=O.[Ca+2:30].[N+]([O-])([O-])=O>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].[Ca+2:30]

Participants

5

Reactant 3

HCID 14798Sodium HydroxideHCID 24963Calcium nitrateHCID 21881707CID 218817072×

Product 1

HCID 21189412Calcium stearyl phosphate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Conditions

Temperature
70 °C

Procedure

Water (17 L) was added to stearyl phosphate (molar ratio of diester/monoester=1/7.7; acid value, 278.6 mg KOH/g) (1 kg) while heating at 70° C., whereby the stearyl phosphate was dispersed uniformly. An aqueous solution of sodium hydroxide (500 g/L) (398 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. Further, stirring was continued at 70° C. for 60 minutes. An aqueous solution of calcium nitrate (200 g/L) (2083 ml) was gradually added at a temperature of 60° to 70° C. After the addition was finished, the mixture was stirred at 60° C. for 60 minutes. On confirming that the remaining calcium ion in water became constant, the reaction was finished. The product was collected, washed with water, filtered, dried at 75° C. for 72 hours and pulverized by the aid of a hammer mill to give calcium stearyl phosphate (1029 g). Yield, 94%. M.P., >250° C. Apparent specific volume, 5.5 ml/g. Elementary analysis: calcd, P=7.5%, Ca=9.1%; found, P=7.3%, Ca=9.0%.

Workup

  1. additionWhen the addition
  2. additionAfter the addition
  3. stirringthe mixture was stirred at 60° C. for 60 minutes
  4. customThe product was collected
  5. washwashed with water
  6. filtrationfiltered
  7. customdried at 75° C. for 72 hours

Sources & evidence

ORD record
ord-a8fc577ed5914696a8186a5147386479
Source dataset
uspto-grants-1979_07
Patent number
US04163018

Linked notes

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