Assertion: perchloric acid | /r/HasProperty | hazardous
Facets:
value: potentially
type: DEGREE
value: during digestion
type: TEMPORAL
value: at concentrations above 70%
type: OTHER
value: especially
type: DEGREE
Source sentences:
text: Perchloric Acid is especially hazardous at concentrations above 70%.
text: Nitric–perchloric acid procedure was not recommended because perchloric acid is potentially hazardous during digestion and it recovers relatively little heavy metal.