About: http://webisa.webdatacommons.org/18795229

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	Also used are citric acid and its salts and sodium EDTA. In addition, parenteral solutions can contain preservatives, such as benzalkonium chloride, methyl- or propylparaben, and chlorbutanol.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com