PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Strong caustics; hot iron; reducing metals such as aluminum, magnesium & zinc NIOSH KI8225000
http://www.w3.org/ns/prov#wasQuotedFrom
  • chemspider.com