Formaldehyde → HCID 131711744, compound

Participants

Reaction Conditions

Reaction Steps

CH2O, tris(2-hydroxyethyl) isocyanurate and melamine were reacted in a CH2O:tris(2-hydroxyethyl) isocyanurate:melamine molar ratio=2:0.7:0.3. An aqueous formaldehyde solution at 36% by weight/volume was brought to a pH-value of about 1 by addition of dilute H2SO4 ; tris(2-hydroxyethyl) isocyanurate was then added under stirring and at 95° C., and the resulting solution was reacted 4 hours at 95° C. It was diluted with water until lowering the reaction mixture temperature to 60° C., melamine was added and it was reacted for 3 hours keeping a temperature of 60° C. A white precipitate was obtained, that was separated by filtration, repeatedly washed with a dilute solution of NaOH and finally dried in an air circulation oven at 150° C.

Provenance & Evidence