Acetic Anhydride → Aluminum hydroxide acetate (1:1:2)

HRID 2286149Notes

Reaction equation

HRID 2286149 reaction equation
[C:1]([O:4]C(=O)C)(=[O:3])[CH3:2].[OH-:8].[Al+3:9].[OH-].[OH-]>C(O)(=O)C>[C:1]([O-:4])(=[O:3])[CH3:2].[C:1]([O-:4])(=[O:3])[CH3:2].[OH-:8].[Al+3:9]

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 10176082Aluminum Hydroxide

Product 1

HCID 10197832Aluminum hydroxide acetate (1:1:2)Yield 95.6%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
125 °C

Procedure

245.0 g of acetic anhydride and 48.0 g of acetic acid (100%) are added to 62.4 g (0.8 mol) of aluminium hydroxide, hydrargillite, Merck, in a 750 ml sulfonation flask, provided with a thermometer, a reflux condenser and a stirrer, and the mixture is heated to 125° C., with stirring. After a reaction time of 12 hours, the reaction product is cooled, filtered off, washed with 4 times 250 ml of water and dried for 12 hours at 130° C./15 mm Hg; 124 g (95.6%) of acicular aluminium monohydroxide diacetate are obtained.

Workup

  1. customprovided with a thermometer, a reflux condenser and a stirrer
  2. temperatureAfter a reaction time of 12 hours, the reaction product is cooled
  3. filtrationfiltered off
  4. washwashed with 4 times 250 ml of water
  5. customdried for 12 hours at 130° C./15 mm Hg

Sources & evidence

ORD record
ord-73ed93c3457246a2b096328933ed52e3
Source dataset
uspto-grants-1982_04
Patent number
US04327032

Reaction notes

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