Ammonia → Biuret

HRID 1906991Notes

Reaction equation

HRID 1906991 reaction equation
[NH2:1][C:2]([NH2:4])=[O:3].N.[NH2:6][C:7]([NH:9][C:10]([NH2:12])=[O:11])=[O:8]>>[NH2:6][C:7]([NH:9][C:10]([NH2:12])=[O:11])=[O:8].[NH:1]1[C:10](=[O:11])[NH:9][C:7](=[O:8])[NH:4][C:2]1=[O:3]

Participants

5

Reactant 3

HCID 222AmmoniaHCID 1176UreaHCID 7913Biuret

Product 2

HCID 7913BiuretHCID 7956Cyanuric acid

Procedure

When molten urea is heated first at atmospheric pressure and thereafter under vacuum, there is a rapid evolution of ammonia upon the application of the vacuum. This indicates the presence of a substantial quantity of biuret precursor moieties generated during the pyrolysis at atmospheric pressure. These active bodies then react under the influence of reduced pressure to give enhanced yields of biuret without excessive production of cyanuric acid.

Workup

  1. customThese active bodies then react under the influence of reduced pressure
  2. customto give enhanced

Sources & evidence

ORD record
ord-898ad4e4935a4540a3a32f7112273d0e
Source dataset
uspto-grants-1987_03
Patent number
US04654441

Reaction notes

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