Melamine → Melamine cyanurate

HRID 846265

Reaction equation

HRID 846265 reaction equation
[NH:1]1[C:8](=[O:9])[NH:7][C:5](=[O:6])[NH:4][C:2]1=[O:3].[OH-].[Na+].[N:12]1[C:19]([NH2:20])=[N:18][C:16]([NH2:17])=[N:15][C:13]=1[NH2:14]>>[C:13]1([NH2:14])[N:15]=[C:16]([NH2:17])[N:18]=[C:19]([NH2:20])[N:12]=1.[C:2]1([NH:4][C:5](=[O:6])[NH:7][C:8](=[O:9])[NH:1]1)=[O:3]

Participants

4

Reactant 3

HCID 7955MelamineHCID 7956Cyanuric acidHCID 14798Sodium Hydroxide

Product 1

HCID 93198Melamine cyanurate

Conditions

Temperature
135 °C

Procedure

Steam was applied to the jacket, the agitator was actuated at low speed, and the mixture was heated to 135° C. The isocyanuric acid was solubulized by the caustic soda into a thin opaque fluid. While maintaining agitation and a temperature of 135° C., melamine powder amounting to 22 pounds, having a mean particle size of 25 microns, was added through the top addition port. The opaque fluid became very white in color and thickened as the chemical reaction to form the very insoluble melamine cyanurate adduct took place. The agitation was continued at 135° C. until the reaction was completed and the product adduct was evenly distributed throughout the thick fluid.

Workup

  1. temperatureWhile maintaining agitation
  2. additionwas added through the top addition port
  3. customthickened as the chemical reaction

Sources & evidence

ORD record
ord-1a6dea5cc90b47f0a8e1bf9487856786
Source dataset
uspto-grants-1992_08
Patent number
US05135974

Linked notes

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