Urea → Einecs 256-823-2

HRID 614968Notes

Reaction equation

HRID 614968 reaction equation
[NH2:1][C:2]([NH2:4])=[O:3].N[C:6](N)=[O:7].C(O)(=O)C[CH2:11][CH2:12][C:13]([OH:15])=[O:14]>>[NH2:1][C:2]([NH2:4])=[O:3].[C:6]([OH:7])(=[O:3])[CH2:11][CH2:12][C:13]([OH:15])=[O:14]

Participants

3

Reactant 2

HCID 1176UreaHCID 7345679421835-54-1

Product 1

HCID 6452277Einecs 256-823-2

Procedure

On the other hand, 45 g. of urea was further added to the mother liquor with the urea-glutaric acid adduct removed and dissolved in the liquor at 60° C. Then, the liquor was cooled to and allowed to stand at 15° C. for 5 hours to precipitate a urea-succinic acid adduct. By filtration of the liquor, 50.3 g. of urea-succinic acid adduct (including 21.6 g. of succinic acid) was obtained. The urea-succinic acid adduct was dissolved in 300 g. of water at 30° C. and the solution was treated with the same strongly acidic ion exchange resin as mentioned above. 200 g. of water was distilled off from the thus treated solution. On cooling to and allowing to stand at 10° C., succinic acid crystallized out of the solution and 19.2 g. of succinic acid having a purity of 99.0% was obtained by filtration.

Workup

  1. customremoved
  2. dissolutiondissolved in the liquor at 60° C
  3. temperatureThen, the liquor was cooled to and
  4. customto precipitate a urea-succinic acid adduct
  5. filtrationBy filtration of the liquor, 50.3 g

Sources & evidence

ORD record
ord-58755673760a4f628046155830e4ec0f
Source dataset
uspto-grants-1979_03
Patent number
US04146730

Reaction notes

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