Sodium Hydroxide → Calcium lauryl phosphate

HRID 972044Notes

Reaction equation

HRID 972044 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-].[Na+].[Cl-].[Ca+2:21].[Cl-]>O>[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].[Ca+2:21]

Participants

5

Reactant 3

HCID 14798Sodium HydroxideHCID 1550836Dodecylphosphate2×HCID 5284359Calcium Chloride

Product 1

HCID 23435097Calcium lauryl phosphate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
60 °C

Procedure

Water (19 L) was added to lauryl phosphate (molar ratio of diester/monoester=1/1; acid value, 240.2 mg KOH/g) (1 kg) while heating at 60° C., whereby the lauryl phosphate was dispersed uniformly. An aqueous solution of sodium hydroxide (300 g/L) (571 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 60° C. for 60 minutes. An aqueous solution of calcium chloride (300 g/L) (802 ml) was gradually added thereto at a temperature of 50 to 60° C. After the addition was finished, the mixture was stirred at about 55° C. for 60 minutes. On confirming that the remaining calcium ion became constant, the reaction was finished. The product was collected, washed with water, filtered, dried at 70° C. for 76 hours and pulverized in a mortar to give calcium lauryl phosphate (1031 g). Yield, 95.2%. Decomposition point, >230° C. Apparent specific volume, 4.0 ml/g. Elementary analysis: calcd., P=8.2%, Ca=8.0%; found, P=8.3%, Ca=7.8%.

Workup

  1. additionWhen the addition
  2. customat a temperature of 50 to 60° C
  3. additionAfter the addition
  4. stirringthe mixture was stirred at about 55° C. for 60 minutes
  5. customThe product was collected
  6. washwashed with water
  7. filtrationfiltered
  8. customdried at 70° C. for 76 hours

Sources & evidence

ORD record
ord-33c69e1bce00453ea47fbb39929ee631
Source dataset
uspto-grants-1979_07
Patent number
US04163018

Reaction notes

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