(organic chemistry) The simplest aldehyde, HCHO, a colourless gas that has many industrial applications; it dissolves in water to give formol (10%) and formalin.

plural of formaldehyde

(chemistry) Any of several of the condensation products of the reaction between urea and formaldehyde (and their derivatives) used as a thermosetting material.

(organic chemistry) Any of a range of thermosetting plastics made by reaction of a phenol with formaldehyde

plural of phenol formaldehyde resin

plural of urea-formaldehyde resin

A salt or ester of formaldehydesulphoxylic acid.

plural of formaldehydesulphoxylate