Potassium Carbonate → HCID 76968137, compound

HRID 1703516Notes

Reaction equation

HRID 1703516 reaction equation
C(=O)([O-])[O-].[K+:5].[K+].[C:7]([OH:15])(=[O:14])[C@H:8]([CH2:10][C:11]([OH:13])=[O:12])[OH:9]>>[C:7]([O-:15])(=[O:14])[C@H:8]([CH2:10][C:11]([O-:13])=[O:12])[OH:9].[K+:5].[K+:5]

Participants

3

Reactant 2

HCID 11430Potassium CarbonateHCID 222656L-Malic Acid

Product 1

HCID 76968137HCID 76968137, compoundYield 230.4%

Conditions

Temperature
10 °C

Procedure

46.2 g (0.334 mole) of potassium carbonate are dissolved in 500 ml of an aqueous L-malic acid solution[L-malic acid content: 75.9 g (0.566 mole)/500 ml]. The solution (pH 4.4) is concentrated at 60° C. under reduced pressure to make the total weight thereof about 170 g. The concentrated solution is cooled to 10° C., and the mixture obtained (i.e., the mixture of the concentrated solution and crystals precipitated) is stirred at the same temperature for 2 hours. After stirring, the mixture had a pH of 5.8. The crystalline precipitates are collected by filtration. 80.9 g of monopotassium potassium L-malate are obtained.

Workup

  1. concentrationThe solution (pH 4.4) is concentrated at 60° C. under reduced pressure
  2. customthe mixture obtained (i.e.
  3. additionthe mixture of the concentrated solution and crystals
  4. customprecipitated)
  5. stirringAfter stirring
  6. customThe crystalline precipitates
  7. filtrationare collected by filtration

Sources & evidence

ORD record
ord-6f7ced7c274f40b99cd19c57b4bf45b9
Source dataset
uspto-grants-1978_11
Patent number
US04124636

Reaction notes

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