About: http://webisa.webdatacommons.org/337027055

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	an impurity, and more particularly to the removal of it from byproduct hydrogen gas generated by mercury electrolytic cells used for caustic soda manufacture.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es