PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Hazardous Substances Data Bank (HSDB) is maintained by the National Library of Medicine and provides comprehensive, peer-reviewed toxicology data for about 5,000 chemicals, including information on synonyms and formulations, manufacturing and use, analytical methods, environmental fate and exposure, physical-chemical properties, and occupational standards.
http://www.w3.org/ns/prov#wasQuotedFrom
  • epa.gov