Assertion: formaldehyde | /r/HasProperty | released over long period
Facets:
value: slowly
type: MANNER
Source sentences:
text: Formaldehyde is also formed as a by-product of free-radical polymerization of methacrylates (as in filled resins) in the presence of oxygen (6§6), and in this context may be a contributory factor to adverse reactions, being released slowly over a long period, presumably as the peroxides break down.