Diammonium succinate → Succinic Acid

HRID 618970Notes

Reaction equation

HRID 618970 reaction equation
[C:1]([O-:8])(=[O:7])[CH2:2][CH2:3][C:4]([O-:6])=[O:5].[NH4+:9].[NH4+].S([O-])([O-])(=O)=O.[NH4+].[NH4+]>O>[C:1]([O-:8])(=[O:7])[CH2:2][CH2:3][C:4]([O-:6])=[O:5].[NH4+:9].[NH4+:9].[C:1]([OH:8])(=[O:7])[CH2:2][CH2:3][C:4]([OH:6])=[O:5]

Participants

5

Reactant 2

HCID 160625Diammonium succinateHCID 6097028Ammonium Sulfate

Product 2

HCID 1110Succinic AcidHCID 160625Diammonium succinate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Operations involving Streams 3, 4, 5, 11, 12, 13 and 15 in FIGS. 1 and 2 were simulated based on the data collected in Experiments I, II and III. From Experiment I, a pH value of 1.6 was chosen as the target pH for the crystallization of succinic acid. From Experiment II, 80% w/w methanol solution was chosen as the target methanol-water ratio for the crystallization of sulfates. Using the results of Experiment III, the initial concentration of ammonium succinate was chosen such that there would have been sufficient water to solubalize ammonium sulfate produced in the conversion of ammonium succinate into succinic acid. This precaution was taken to minimize contamination of succinic acid by sulfates.

Workup

  1. customcollected in Experiments I, II and III
  2. customFrom Experiment I, a pH value of 1.6 was chosen as the target pH for the crystallization of succinic acid
  3. customFrom Experiment II, 80% w/w methanol solution was chosen as the target methanol-water ratio for the crystallization of sulfates
  4. customresults of Experiment III

Sources & evidence

ORD record
ord-5ac7416bb3fc41a8ab1f820344dcf2ab
Source dataset
uspto-grants-1999_09
Patent number
US05958744

Reaction notes

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