Lactic Acid → Citric Acid

HRID 1886747Notes

Reaction equation

HRID 1886747 reaction equation
C(O)(=O)C(C)O.C([O-])(=O)C(C)O.[Ca+2].C([O-])(=O)C(C)O.O.[C:21]([OH:33])(=[O:32])[CH2:22][C:23]([CH2:28][C:29]([OH:31])=[O:30])([C:25]([OH:27])=[O:26])[OH:24]>O>[C:21]([OH:33])(=[O:32])[CH2:22][C:23]([CH2:28][C:29]([OH:31])=[O:30])([C:25]([OH:27])=[O:26])[OH:24]

Participants

5

Reactant 3

HCID 612Lactic AcidHCID 13144Calcium LactateHCID 222302-Hydroxy-1,2,3-propanetricarboxylic acid hydrate (1:1)

Product 1

HCID 311Citric Acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

In a vessel, the following liquid (A) was prepared by adding and mixing 32 kg of water, 8 kg of Ca(OH)2 and 9.8 kg of lactic acid 88%. This liquid was kept at 80° C. in order to keep the calcium lactate dissolved and was continuously stirred to keep the excess Ca(OH)2 suspended. In an other vessel a citric acid solution was prepared by adding and mixing 50 kg of citric acid monohydrate and 32 kg of water.

Workup

  1. additionby adding
  2. customwas kept at 80° C. in order
  3. dissolutiondissolved
  4. additionby adding

Sources & evidence

ORD record
ord-b5666bc56a9346019b9bca0b04b33190
Source dataset
uspto-grants-2013_08
Patent number
US08501255B2

Reaction notes

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