Assertion: cadmium sulfide | /r/HasAspect | some stability problems
Facets:
value: in unvarnished paintings
type: LOCATION
Source sentences:
text: Cadmium sulfide itself has some stability problems in unvarnished paintings, as it can react with air and water in the presence of ultraviolet light to produce the colourless cadmium sulfate, but care has to be taken to ensure that the varnish itself won’t cause problems.