Citric Acid → Zinc Stearate

HRID 2120292Notes

Reaction equation

HRID 2120292 reaction equation
[C:1]([OH:20])(=[O:19])[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][CH3:18].[O-2].[Zn+2:22].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>O>[C:1]([O-:20])(=[O:19])[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][CH3:18].[Zn+2:22].[C:1]([O-:20])(=[O:19])[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][CH3:18]

Participants

5

Reactant 3

HCID 311Citric AcidHCID 5281Stearic AcidHCID 3007857Zinc Oxide

Product 1

HCID 11178Zinc StearateYield 100%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
70 °C

Procedure

A molten stearic acid (202 grams of Hystrene 4516) was added gradually to a stirred slurry of zinc oxide (32 grams), citric acid (0.5 gram), Methocel F50 (3 grams), and water (560 grams) at 65° C. The mixture was stirred at 65-75° C. for 1 hour to afford after filtering and drying a 100% yield of zinc stearate as indicated by its infrared spectrum. The resulting product was a white powder having free fatty acid content of 0.22% by weight.

Workup

  1. customto afford
  2. filtrationafter filtering

Sources & evidence

ORD record
ord-dec7dbd8efab47258185b93cc59e1328
Source dataset
uspto-grants-2004_02
Patent number
US06689894B1

Reaction notes

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