About: http://webisa.webdatacommons.org/270061634

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	In the present invention, preferred are iron powder and the organic compounds such as ascorbic acid, its salts, and gallic acid which have been well recognized as effective oxygen absorbents.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com