Assertion: oxalic acid | /r/ObjectUse | used as an acid rinse
Facets:
value: widely
type: DEGREE
value: in laundries
type: LOCATION
Source sentences:
text: Oxalic acid is widely used as an acid rinse in laundries, where it is effective in removing rust and ink stains because it converts most insoluble iron compounds into a soluble complex ion.