Urea → Einecs 256-823-2

HRID 614981노트

반응식

HRID 614981 반응식
[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]

참가 물질

3

반응물 2

HCID 1176UreaHCID 7345679421835-54-1

생성물 1

HCID 6452277Einecs 256-823-2

실험 절차

50 g. of urea was further added to the mother liquor with the glutaric acid adduct removed and dissolved at 60° C. The resulting solution was cooled to and allowed to stand at 15° C. for 4 hours to precipitate a urea-succinic acid adduct. By filtration, 51 g. of urea-succinic acid adduct (including 23 g. of succinic acid) was obtained. The obtained urea-succinic acid adduct was then 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 to remove urea. 200 g. of water was removed from the treated solution and on subsequent cooling to and allowing to stand at 10° C. for 3 hours, succinic acid crystallized out of the solution. By filtration, 20 g. of succinic acid having a purity of 99% was obtained.

후처리

  1. customremoved
  2. dissolutiondissolved at 60° C
  3. temperatureThe resulting solution was cooled to and
  4. customto precipitate a urea-succinic acid adduct
  5. filtrationBy filtration, 51 g

출처 및 근거

ORD 기록
ord-7da86a2637f04bad9de027255912bf49
출처 데이터셋
uspto-grants-1979_03
특허 번호
US04146730

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