About: http://webisa.webdatacommons.org/159476418

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	The acid may be an organic such as fumaric, citric, tartaric, etc., or a corresponding anhydride or an inorganic, such as sulfamic or phosphonic acid derivitave as disclosed in U.S. Pat. No. 3,325,357.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com