Assertion: acetic anhydride | /r/HasProperty | separated in known apparatus
Facets:
value: from the residue
type: OTHER
value: well
type: MANNER
Source sentences:
text: The acetic anhydride formed is separated from the other products of the reaction and the residue by distilling the mixture under a Vacuum, in any well known apparatus for that purpose, at a temperature of approximately 50 to 7 5 C.