About: http://webisa.webdatacommons.org/443132581

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	a derivative thereof, in particular anhydrides for example, acetic acid, formic acid, propionic acid, acetic anhydride), optionally mixed with an acid catalyst (for example; sulphuric acid).
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com