Hydrochloric Acid → Formaldehyde;phenol

Participants

Reaction Conditions

Reaction Steps

Phenol (300 g), 220 g of 37% aqueous formaldehyde solution (molar ratio of phenol: formaldehyde=1: 0.85) and 0.3 ml of 35% concentrated hydrochloric acid were mixed, and the mixture was heated at 85° C. under reflux with stirring for 5 hours. The mixture was subsequently cooled and then added dropwise to water under stirring. The sediment formed was filtered off, and dissolved in a small amount of methanol. The resulting methanol solution was added to a plenty of water. The sediment formed in the water was filtered off and dried to give a phenolformaldehyde condensate.

Provenance & Evidence