About: http://webisa.webdatacommons.org/18773992

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	Alkali metal or alkaline-earth metal salts, and in particular sodium or magnesium salts, are preferably used.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com